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9,905 Animals, page 1 of 5
- Sépiole Naine: Sepiola rondeleti
- S-Banded Tiger Beetle: Cicindela trifasciata, Cicindela trifasciata ascendens
- Sabah Bamboo Pitviper: Trimeresurus sabahi
- Sabah Damsel: Pomacentrus geminospilus
- Sabaki Tilapia: Oreochromis spilurus spilurus
- Sabalo: Prochilodus lineatus
- Saber Crab: Platychirograpsus spectabilis
- Saber-Tooth Fish: Evermannella balbo
- Saberfin Killie: Terranatos dolichopterus
- Sabertooth: Evermannella indica
- Sabertooth Blenny: Plagiotremus azaleus
- Sabertooth Thryssa: Lycothrissa crocodilus
- Sabine Island Aglaja: Chelidonura sabina
- Sabine Map Turtle: Graptemys ouachitensis, Graptemys ouachitensis sabinensis
- Sabine Shiner: Notropis sabinae
- Sabine’s Gull: Larus sabini sabina, Larus sabini woznesenskii, Xema sabini
- Sabine’s Spinetail: Rhaphidura sabini
- Sabino Dancer: Argia sabino
- Sable: Martes zibellina, Martes zibellina linkouensis
- Sable Antelope: Hippotragus niger
- Sable Clubtail: Gomphus rogersi
- Sablefish: Anoplopoma fimbria
- Sabre Carp: Pelecus cultratus
- Sabre Fin: Terranatos dolichopterus
- Sabre Fin Killie: Terranatos dolichopterus
- Sabre Fish: Chirocentrus dorab
- Sabre Fish Silver Bar: Chirocentrus dorab
- Sabre Prawn: Campylonotus rathbunae
- Sabre Squirrelfish: Sargocentron spiniferum
- Sabrefish: Pelecus cultratus
- Sabretooth Blenny: Plagiotremus azaleus, Plagiotremus goslinei
- Sabretoothed Blenny: Petroscirtes variabilis, Plagiotremus goslinei
- Sabretoothed Thryssa: Lycothrissa crocodilus
- saburbir Emperor: Lethrinus lentjan
- Sacculinid Parasitic Barnacle: Loxothylacus panopaei
- Sackfish: Neoepinnula orientalis
- Sacramento Anthicid Beetle: Anthicus sacramento, Anthrenus verbasci
- Sacramento Beetle: Anthicus sacramento, Anthrenus verbasci
- Sacramento Blackfish: Orthodon microlepidotus
- Sacramento Golden Trout: Oncorhynchus mykiss stonei
- Sacramento Mountain Salamander: Aneides hardii
- sacramento Mountains Salamander: Aneides hardii
- Sacramento Perch: Archoplites interruptus
- Sacramento Pikeminnow: Ptychocheilus grandis
- Sacramento Smelt: Spirinchus thaleichthys
- Sacramento Splittail: Pogonichthys macrolepidotus
- Sacramento Squawfish: Ptychocheilus grandis
- Sacramento Sturgeon: Acipenser transmontanus
- Sacramento Sucker: Catostomus occidentalis, Catostomus occidentalis lacusanserinus, Catostomus occidentalis occidentalis
- Sacramento Tuleperch: Hysterocarpus traskii, Hysterocarpus traskii pomo, Hysterocarpus traskii traskii
- Sacred Fir Looper: Evita hyalinaria
- Sacred Ibis: Threskiornis aethiopicus
- Sacred Kingfisher: Todiramphus sanctus
- Sacrobatus Ensign Scale: Praelongorthezia sarcobati
- Sad Cardinal: Apogon timorensis
- Sad Cardinalfish: Apogon timorensis
- Sad Elliptio: Elliptio lugubris
- Sad Flycatcher: Myiarchus barbirostris
- Sad Glider: Ptereleotris lineopinnis
- Sad Klipfish: Clinus acuminatus
- Sada’s Pyrg: Pyrgulopsis sadai
- Saddle Anemone: Amphiprion ephippium
- Saddle Anemonefish: Amphiprion ephippium
- Saddle Back Clown: Amphiprion polymnus
- Saddle Bass: Serranus notospilus, Sphoeroides greeley
- Saddle Blenny: Ecsenius sellifer, Malacoctenus triangulatus
- Saddle Bream: Oblada melanura
- Saddle Butterflyfish: Chaetodon ephippium
- saddle Carpetshark: Cirrhoscyllium japonicum
- Saddle Cichlid: Aequidens pallidus, Aequidens tetramerus
- Saddle Clown Blenny: Ecsenius sellifer
- Saddle Corydoras: Corydoras ephippifer
- Saddle Crayfish: Orconectes durelli
- Saddle Grunt: Pomadasys maculatus, Pomadasys multimaculatum
- Saddle Grunter: Pomadasys maculatus
- Saddle Midshipman: Porichthys ephippiatus
- Saddle Shoulderband: Helminthoglypta piutensis
- Saddle Squirrelfish: Sargocentron poco
- Saddle Stargazer: Platygillellus rubrocinctus
- saddle Toby: Canthigaster coronata
- Saddle Wrasse: Thalassoma duperrey
- Saddle-Back Butterflyfish: Chaetodon ephippium
- Saddle-Back Hogfish: Bodianus bilunulatus, Bodianus bilunulatus albotaeniatus
- Saddle-Back Puffer: Canthigaster coronata
- Saddle-Back Shrew: Sorex arcticus
- Saddle-Back Snapper: Paracaesio kusakarii
- Saddle-Back Tamarin: Saguinus fuscicollis primitivus
- Saddle-Back Wrasse: Thalassoma duperrey
- Saddle-backed Bush-cricket: Ephippiger ephippiger ephippiger
- Saddle-Backed Dolphin: Delphinus delphis
- Saddle-Billed Stork: Ephippiorhynchus senegalensis
- Saddle-Tail Snapper: Lutjanus malabaricus
- saddle-Tailed Sea-Perch: Lutjanus erythropterus, Lutjanus malabaricus
- Saddleback: Acharia stimulea, Philesturnus carunculatus
- Saddleback Acara: Aequidens tetramerus
- Saddleback Anemonefish: Amphiprion polymnus
- Saddleback Butterfly: Chaetodon ulietensis
- Saddleback Butterflyfish: Chaetodon ephippium, Chaetodon falcula
- Saddleback Caterpillar: Sibine stimulea
- Saddleback Caterpillar Moth: Acharia stimulea
- Saddleback Clownfish: Amphiprion polymnus
- Saddleback Coralgrouper: Plectropomus laevis
- Saddleback Crayfish: Orconectes medius
- Saddleback Darter: Percina vigil
- Saddleback Dolphin: Delphinus capensis
- Saddleback Duckbill: Bembrops quadrisella
- Saddleback Grouper: Plectropomus laevis
- Saddleback Gunnel: Pholis ornata
- Saddleback Hogfish: Bodianus bilunulatus, Bodianus bilunulatus albotaeniatus
- Saddleback Looper: Ectropis crepuscularia
- Saddleback Pufferfish: Canthigaster valentini
- Saddleback Sculpin: Oligocottus rimensis
- Saddleback Shrimp: Rhynocrangon alata
- Saddleback Silver-Biddy: Gerres limbatus, Vexillum tuberosa
- Saddleback Snapper: Paracaesio kusakarii
- Saddlebacked Crayfish: Orconectes medius
- Saddlebacked Looper: Ectropis crepuscularia
- Saddlebacked Tamarin: Saguinus fuscicollis, Saguinus fuscicollis fuscicollis, Saguinus fuscicollis lagonotus
- Saddlebanded Goby: Barbulifer mexicanus
- Saddled Bichir: Polypterus endlicheri, Polypterus endlicheri endlicheri
- Saddled Blenny: Malacoctenus triangulatus, Pholis ornata
- Saddled Butterflyfish: Chaetodon ephippium, Chaetodon falcula
- Saddled Carpet Shark: Cirrhoscyllium japonicum
- Saddled Catshark: Asymbolus submaculatus
- Saddled Coralfish: Chaetodon ephippium
- Saddled Eelpout: Acanthonus aramatus, Lycodes mucosus
- Saddled Galaxias: Galaxias tanycephalus
- Saddled Goby: Callogobius clitellus
- Saddled Grenadier: Caelorinchus caelorhincus, Caelorinchus caelorhincus caelorhincus
- Saddled Grouper: Epinephelus daemelii
- Saddled Leaf-Nosed Snake: Phyllorhynchus browni, Phyllorhynchus browni browni, Phyllorhynchus browni lucidus
- Saddled Leafnose Snake: Phyllorhynchus browni
- Saddled Madtom: Noturus fasciatus
- Saddled Moray: Gymnothorax conspersus
- Saddled Parrotfish: Chlorurus cyanescens, Scarus dimidiatus
- Saddled Prawn-Goby: Cryptocentrus leucostictus
- Saddled Prickleback: Lumpenopsis clitella
- Saddled Prominent: Heterocampa guttivitta
- Saddled Pufferfish: Canthigaster valentini
- Saddled Rainbowfish: Halichoeres marginatus
- Saddled Rainmbowfish: Halichoeres margaritaceus
- saddled Rock Cod: Cephalopholis sexmaculata
- Saddled Rockclimbing Goby: Sicyopterus lividus
- Saddled Rockcod: Epinephelus daemelii
- saddled Sandburrower: Chalixodytes chameleontoculis, Chalixodytes tauensis
- Saddled Seabream: Oblada melanura
- Saddled Shrimp Goby: Cryptocentrus leucostictus
- Saddled Snake Eel: Leiuranus semicinctus
- Saddled Snake-Eel: Leiuranus semicinctus, Ophichthus bonaparti
- Saddled Toby: Canthigaster valentini
- Saddled Triplefin: Enneapterygius atrogulare
- Saddled Weever: Parapercis sexfasciata, Patapius thaiensis
- Saddlefish: Pomadasys maculatus
- Saddlehead: Glyptauchen panduratus
- Saddletail Grouper: Epinephelus daemelii
- Saddletail Snapper: Lutjanus malabaricus
- Saddletailed Cardinalfish: Apogon maculatus
- Saddletailed Sea Perch: Lutjanus erythropterus, Lutjanus sanguineus
- Sadleback Leafhopper: Colladonus clitellarius
- Sadler’s Robber: Brycinus sadleri
- Sado Mole: Mogera tokudae
- Sado Shrew: Sorex shinto
- Safari Pink Nemesia: Nemesia fruticans ’Safari Pink’
- Safari Plum Nemesia: Nemesia fruticans ’Safari Plum’
- Saffron Cod: Eleginus gracilis
- Saffron Darter: Etheostoma flavum
- Saffron Finch: Sicalis flaveola
- Saffron Shiner: Notropis rubricroceus
- Saffron Shrimp-Goby: Ctenogobiops crocineus
- Saffron Siskin: Carduelis siemiradzkii
- Saffron Toucanet: Baillonius bailloni, Pteroglossus bailloni
- Saffron-Cowled Blackbird: Xanthopsar flavus
- Saffron-Crested Tyrant-Manakin: Neopelma chrysocephalum
- Saffron-Headed Parrot: Pionopsitta pyrilia
- Saffron-Winged Meadowhawk: Sympetrum costiferum
- Safio: Myrichthys breviceps
- Saga Fritillary: Boloria frigga saga
- Sagami Grenadier: Ventrifossa garmani
- Sagami Sturgeon: Acipenser sinensis
- Sagar Bat Tick: Carios chiropterphila
- Sage Grasshopper: Hypochlora alba
- sage Grouse: Centrocercus urophasianus, Centrocercus urophasianus phaios, Centrocercus urophasianus urophasianus
- Sage Orthezia: Praelongorthezia artemisiae
- Sage Shoulderband: Helminthoglypta salviae
- Sage Sparrow: Amphispiza belli, Amphispiza belli belli, Amphispiza belli clementeae
- Sage Sphinx: Sphinx eremitoides
- Sage Thrasher: Oreoscoptes montanus
- Sage’s Rock Rat: Aconaemys sagei
- Sagebrush Checkerspot: Chlosyne acastus
- Sagebrush Grasshopper: Melanoplus bowditchi
- Sagebrush Grig: Cyphoderris strepitans
- Sagebrush Lizard: Sceloporus graciosus, Sceloporus graciosus graciosus, Sceloporus vandenburgianus
- Sagebrush Mealybug: Amonostherium lichtensioides
- Sagebrush Sooty Hairstreak: Satyrium semiluna
- Sagebrush Spur-Throat Grasshopper: Melanoplus artemesiae
- Sagebrush Tiger Beetle: Cicindela pugetana
- Sagebrush Vole: Lemmiscus curtatus
- Sagehen Creek Goeracean Caddisfly: Goeracea oregona
- Sagihe Isalnd Tarsier: Tarsius sangirensis
- Sago Palm Scale: Aulacaspis yasumatsui
- Sago Tryonia: Tryonia kosteri
- Sagor: Arius sagor
- Sagor Catfish: Arius sagor
- Sagor Sea Catfish: Arius sagor
- Sahara Aphanius: Aphanius saourensis
- Sahara Oryx: Oryx dammah
- Saharan Shrew: Crocidura tarfayensis
- Saharan Striped Polecat: Ictonyx libyca
- Saharan Striped Weasel: Poecilictis libyca
- Sahel Gerbil: Taterillus arenarius
- Sahelian Tiny Shrew: Crocidura pasha
- Saiga: Saiga tatarica, Saiga tatarica mongolica
- Saiga Antelope: Saiga tatarica, Saiga tatarica tatarica
- Sail Blenny: Lipophrys velifer
- sail Fish: Istiophorus platypterus
- Sail Fish Tang: Zebrasoma veliferum, Zebrasoma veliferum desjardinii
- Sail-Fin: Polypterus senegalus senegalus
- Sail-Fin Molly: Poecilia velifera
- Sail-Fins of Bichirs: Polypterus endlicheri endlicheri
- sail-Fish: Istiophorus platypterus
- Sailback Hound Shark: Gogolia filewoodi
- Sailback Houndshark: Gogolia filewoodi
- Sailfin: Erpetoichthys calabaricus, Istiophorus platypterus
- Sailfin Anthias: Rabaulichthys altipinnis
- Sailfin Arctic Grayling: Thymallus arcticus arcticus
- Sailfin Armorhead: Histiopterus typus
- Sailfin Armourhead: Histiopterus typus
- Sailfin Basslet: Heteropoda salacia, Pseudanthias pascalus
- Sailfin Blenny: Emblemaria pandionis, Lipophrys velifer
- Sailfin Boarfish: Histiopterus typus
- Sailfin Boarhead: Histiopterus typus
- Sailfin Catfish: Paraplotosus butleri, Pavona repens, Pterygoplichthys multiradiatus
- Sailfin Characin: Crenuchus spilurus, Ctenobrycon spilurus spilurus
- Sailfin Clinid: Myxodes cristatus
- Sailfin Corydoras: Scleromystax macropterus
- Sailfin Dory: Columba lugens, Zenopsis conchifera
- Sailfin Dottyback: Ogilbyina velifera
- Sailfin Eel: Letharchus velifer, Paraletharchus pacificus
- Sailfin Flyingfish: Parexocoetus brachypterus
- Sailfin Glass Perchlet: Ambassis agrammus
- Sailfin Glassfish: Ambassis agrammus
- Sailfin Goby: Myersina pretoriusi, Nesogobius pulchellus
- Sailfin Grouper: Mycteroperca olfax
- Sailfin Hovergoby: Ptereleotris evides
- Sailfin Leaf Fish: Taenianotus triacanthus
- Sailfin Leaffish: Taenianotus triacanthus
- Sailfin Mollie: Poecilia latipinna, Poecilia velifera
- Sailfin Molly: Poecilia latipinna, Poecilia velifera
- Sailfin Mudskipper: Periophthalmus kalolo, Tellinella jubar
- Sailfin Mudsucker: Labeo altivelis, Octopus peali
- Sailfin Pimeloid: Leiarius marmoratus
- Sailfin Pleco: Glyptoperichthys gibbiceps
- Sailfin Ribbon-Goby: Oxymetopon typus
- Sailfin Roughshark: Oxynotus paradoxus
- Sailfin Rubberlip: Diagramma pictum, Diagramma pictum pictum, Diagramma pictum punctatumand
- Sailfin Sandfish: Arctoscopus japonicus
- Sailfin Sculpin: Nautichthys oculofasciatus
- Sailfin Shiner: Notropis hypselopterus
- Sailfin Signal Blenny: Emblemaria piratica
- Sailfin Snake-Eel: Letharchus rosenblatti
- Sailfin Snapper: Symphorichthys spilurus
- Sailfin Stargazer: Platygillellus altivelis
- sailfin Surgeonfish: Zebrasoma veliferum
- sailfin Tang: Zebrasoma veliferum, Zebrasoma veliferum desjardinii
- Sailfin Tetra: Crenuchus spilurus
- Sailfin Velifer: Velifer hypselopterus
- Sailfin Weever: Trachinus collignoni
- Sailfish: Istiophorus albicans, Istiophorus platypterus
- Sailfish Catfish: Pavona repens, Pterygoplichthys multiradiatus
- Sailfish Pike: Channichthys velifer
- Sailfishsucker: Remora osteochir
- Sailor Flyingfish: Prognichthys sealei
- Sailor’s Choice: Haemulon parra, Kalidos fisakambrae, Lagodon rhomboides, Nipponocrassatella japonica, Orthopristis chrysoptera, Seriola dumerili
- Sailor’s Grunt: Haemulon parra
- Sailor-Fish: Nautichthys oculofasciatus
- Sailors Choice: Haemulon parra
- Sailray: Dipturus linteus
- Sailskate: Dipturus linteus
- Saimaa Ringed Seal: Pusa hispida saimensis
- Saimaa Seal: Phoca hispida saimensis, Pusa hispida saimensis
- Saint Andrew Vireo: Vireo caribaeus
- Saint Ann’s Bay: Chilostoma alpinum, Scorpaenodes caribbaeus
- Saint Brandon’s Annie: Anisochromis straussi
- Saint Croix Ground Lizard: Ameiva polops
- Saint Croix Racer: Alsophis sanctaecrucis
- Saint Helena Butterflyfish: Chaetodon sanctaehelenae
- Saint Helena Earwig: Labidura herculeana
- Saint Helena Plover: Charadrius sanctaehelenae
- Saint Lucia Mullet: Liza melinoptera
- Saint Paul Cave Beetle: Pseudanophthalmus sanctipauli
- Saint Paul’s Gregory: Stegastes sanctipauli
- Saipan Pygmy Goby: Eviota saipanensis, Nitidella idalina
- Saisi Lampeye: Aplocheilichthys matthesi
- Saithe: Pollachius virens
- Sakalava Rail: Amaurornis olivieri
- Sakashima Green Snake: Liopeltis herminae
- Sakeji Horseshoe Bat: Rhinolophus sakejiensis
- Saker Falcon: Falco cherrug
- Sakhalin Myotis: Myotis abei
- Sakhalin Nine-Spined Stickleback: Pungitius tymensis
- Sakhalin Sculpin: Cottus amblystomopsis
- Sakhalin Sole: Limanda sakhalinensis
- Sakhalin Stickleback: Pungitius tymensis
- Sakhalin Sturgeon: Acipenser mikadoi
- Sakhalin Taimen: Hucho perryi
- Sakhalin Vole: Microtus sachalinensis
- Sakhaline Ninespine Stickleback: Pungitius tymensis
- Sakhalinian Char: Salvelinus vasiljevae
- Sakis: Pithecia hirsuta
- Sakura Shrimp: Sergia lucens
- Sala Y Gómez Slopefish: Symphysanodon parini
- Salado Darter: Etheostoma segrex
- Salado Salamander: Eurycea chisholmensis
- Salado Shiner: Notropis saladonis
- Salakh: Octopus globosus
- Salalah Guitarfish: Rhinobatos salalah
- Salama: Chioglossa lusitanica
- Salamander Mussel: Simpsonaias ambigua
- Salamander Shark: Parmaturus pilosus
- Salamander Slug: Gliabates oregonius
- Salamanderfish: Lepidogalaxias salamandroides
- Salamandra Portuguesa: Chioglossa lusitanica
- Salano: Salanoia concolor
- Salanx: Salangichthys microdon
- Salapia Clearwing: Ithomia salapia
- Saldanha Cat Shark: Apristurus saldanha
- Saldanha Catshark: Apristurus saldanha
- Salele Flagtail: Kuhlia salelea
- Salem Cave Crayfish: Cambarus hubrichti
- Salema: Kyphosus analogus, Sarpa salpa, Xenistius californiensis
- Salema Butterfish: Peprilus snyderi
- Salema Porgy: Sarpa salpa
- Salenski’s Shrew: Chodsigoa salenskii
- Salenus Faceted-Skipper: Synapte salenus
- Salenus Skipper: Synapte salenus
- Salicet Sphinx: Smerinthus saliceti
- Salicicola Scale: Epidiaspis salicicola
- Salim Ali’s Fruit Bat: Latidens salimalii
- Salina Mucket: Disconaias salinasensis, Potamilus metnecktayi
- Salinas Chub: Gila modesta
- Salinas Harvest Mouse: Reithrodontomys megalotis distichlis
- Salinas Monjita: Xolmis rubetra
- Salinas Peak Woodlandsnail: Ashmunella salinasensis
- Salinas Pocket Mouse: Perognathus inornatus psammophilus
- Saline Burrowing Crayfish: Fallicambarus strawni
- Saline Valley Snow-Front Scarab Beetle: Polyphylla anteronivea
- Salish Toothshell: Pulsellum salishorum
- Sally Lightfoot Crab: Grapsus grapsus
- Sally’s Grass Straddler: Yutjuwalia sallyae
- Salmanderfish: Lepidogalaxias salamandroides
- Salmon: Conus granarius, Ctenosciaena gracilicirrhus, Cynoscion jamaicensis, Cynoscion virescens, Elagatis bipinnulata, Oncorhynchus aguabonita, Oncorhynchus apache, Oncorhynchus chrysogaster, Oncorhynchus clarkii clarkii, Oncorhynchus clarkii lewisi, Oncorhynchus clarkii pleuriticus, Oncorhynchus gilae, Oncorhynchus ishikawai, Oncorhynchus iwame, Oncorhynchus kisutch, Oncorhynchus masou formosanum, Oncorhynchus masou macrostomus, Oncorhynchus masou masou, Oncorhynchus nerka, Oncorhynchus rhodurus, Oncorhynchus tshawytscha, Salmo aphelios, Salmo balcanicus, Salmo carpio, Salmo cettii, Salmo dentex, Salmo ezenami, Salmo ferox, Salmo fibreni, Salmo ischchan, Salmo labrax, Salmo letnica, Salmo lumi, Salmo macedonicus, Salmo marmoratus, Salmo nigripinnis, Salmo pallaryi, Salmo pelagonicus, Salmo peristericus, Salmo platycephalus, Salmo rhodanensis, Salmo salar, Salmo salar relictus, Salmo schiefermuelleri, Salmo stomachicus, Salmo taleri, Salmo trutta aralensis, Salmo trutta fario, Salmo trutta lacustris, Salmo trutta macrostigma, Salmo trutta oxianus, Salmo visovacensis, Salmo zrmanjaensis
- Salmon Aeolis: Flabellina salmonacea
- Salmon Bass: Argyrosomus regius
- Salmon Bernard-Clam: Halodakra salmonea
- Salmon Bernardclam: Halodakra salmonea
- salmon Bluefish: Pomatomus saltatrix
- Salmon Canary: Sebastes alutus
- Salmon Catfish: Arius graeffei, Arius leptaspis, Chrysichthys brachynema
- Salmon Clownfish: Amphiprion perideraion
- Salmon Coil: Helicodiscus salmonaceus
- Salmon Gill-Maggot: Salmincola salmoneus
- Salmon Glass-Scallop: Cyclopecten davidsoni
- Salmon Grouper: Mycteroperca interstitialis
- Salmon Herring: Chanos chanos
- Salmon Louse: Lepeophtheirus salmonis
- Salmon Mackerel: Grammatorcynus bicarinatus
- Salmon Margarite: Margarites salmoneus
- Salmon Oregonian: Cryptomastix harfordiana
- Salmon Peel: Albula vulpes, Salmo salar, Salmo salar relictus
- Salmon Pink Birdeater Tarantula: Lasiodora parahybana
- Salmon Rock Fish: Mycteroperca interstitialis
- Salmon Rockfish: Mycteroperca interstitialis
- Salmon Runner: Elagatis bipinnulata
- Salmon Sealouse: Caligus elongatus
- Salmon Shark: Lamna ditropis
- Salmon Shrimp: Mesopenaeus tropicalis
- Salmon Smooth-Head: Conocara salmoneum
- Salmon Snailfish: Careproctus rastrinus
- Salmon Tellin: Tellina nuculoides
- Salmon Trout: Arripis trutta, Arripis truttacea, Gymnocranius griceus, Oncorhynchus masou masou, Oncorhynchus mykiss, Oncorhynchus mykiss stonei, Salmo trutta trutta, Salvelinus alpinus alpinus, Salvelinus fontinalis, Salvelinus malma malma, Salvelinus namaycush
- Salmon’s Tiger-Heron: Tigrisoma fasciatum
- Salmon-Crested Cockatoo: Cacatua moluccensis
- Salmon-Red Rainbow Fish: Glossolepis incisus
- Salmon-Striped Frog: Limnodynastes salmini
- Salmon-Trout: Salvelinus malma malma
- Salmonete: Polymixia nobilis
- Salmons: Salmo obtusirostris
- Salokko Rat: Taeromys arcuatus
- Salom: Centropomus parallelus
- Salome Yellow: Eurema salome
- Salpa: Sarpa salpa
- Salpensa Sailor: Dynamine tithia salpensa
- Salt & Pepper Looper Moth: Syngrapha rectangula
- Salt and Pepper Catfish: Corydoras habrosus
- Salt and Pepper Moray: Gymnothorax eurostus
- Salt and Pepper Sea Cucumber: Cucumaria piperata
- Salt Cedar Leaf Beetle: Diorhabda elongata
- Salt Creek Pupfish: Cyprinodon salinus salinus
- Salt Creek Tiger Beetle: Cicindela nevadica lincolniana
- Salt Eriococcin: Eriococcus salarius
- Salt Grass Mealybug: Distichlicoccus salinus, Humococcus caritus
- Salt Grass Scale: Circulaspis fistulella
- Salt Lake Short-Horned Lizard: Phrynosoma douglassii ornatum
- Salt Marsh Copper: Lycaena dospassosi
- Salt Marsh Grass Scale: Haliaspis spartinae
- Salt Marsh Greenhead: Tabanus conterminus
- Salt Marsh Harvest Mouse: Reithrodontomys raviventris
- Salt Marsh Meadow Grasshopper: Conocephalus spartinae
- Salt Marsh Meadow Katydid: Conocephalus spartinae
- Salt Marsh Moth Or Acrea Moth: Estigmene acrea
- Salt Marsh Mud Crab: Panopeus obesus
- Salt Marsh Ornate Shrew: Sorex ornatus salicornicus
- Salt Marsh Skipper: Panoquina panoquin
- Salt Marsh Snake: Nerodia clarkii
- Salt Marsh Water Snake: Nerodia clarkii, Nerodia clarkii, Nerodia clarkii, Nerodia clarkii
- Salt Spring Hydrobe: Pseudotryonia grahamae
- Salt’s Dik-Dik: Madoqua saltiana
- Salt-And-Pepper Doris: Aegires albopunctatus
- Salt-Marsh Ground Cricket: Allonemobius sparsalsus
- Salt-Marsh Harvest Mouse: Reithrodontomys raviventris, Reithrodontomys raviventris halicoetes
- Salt-Water Bream: Lagodon rhomboides, Nipponocrassatella japonica
- Salt-Water Snake: Pholis gunnellus
- Salt-Water Trout: Salvelinus alpinus, Salvelinus alpinus alpinus, Salvelinus alpinus aureolus, Salvelinus alpinus stagnalis
- Salta Tuco-Tuco: Ctenomys saltarius
- Saltbrush Mealybug: Heliococcus atriplicis
- Saltbush Sooty Wing: Hesperopsis alpheus texana
- Saltbush Sootywing: Hesperopsis alpheus
- Salted Yellow Doris: Doriopsilla albopunctata
- Salter: Salvelinus fontinalis
- Salticid Spider: Bryantella smaragdus, Bryantella speciosa
- Saltie: Crocodylus porosus
- Saltillo Chub: Gila modesta
- Saltmarsh Ambersnail: Succinea paralia
- Saltmarsh Caterpillar: Estigmene acrea
- Saltmarsh Common Yellowthroat: Geothlypis trichas sinuosa
- Saltmarsh Harvest Mouse: Reithrodontomys raviventris
- Saltmarsh Hydrobe: Spurwinkia salsa
- Saltmarsh Mud Crab: Panopeus obesus
- Saltmarsh Sharp-Tailed Sparrow: Ammodramus caudacutus
- Saltmarsh Tiger Beetle: Cicindela severa
- Saltmarsh Topminnow: Fundulus jenkinsi
- Saltmarsh Wandering Shrew: Sorex vagrans halicoetes
- Saltpan Fiddler: Uca burgersi
- Saltpan Sole: Synaptura salinarum
- Saltwater Crocodile: Crocodylus porosus
- Saltwater Gar: Strongylura marina
- Saltwater Paperbark: Melaleuca cuticularis
- Saltwater Trout: Cynoscion regalis
- Saluda Darter: Etheostoma collis, Etheostoma saludae
- Salvadori’s Antwren: Myrmotherula minor
- Salvadori’s Fig-Parrot: Psittaculirostris salvadorii
- Salvadori’s Nightjar: Caprimulgus pulchellus
- Salvadori’s Serin: Serinus xantholaemus
- Salvadori’s Teal: Salvadorina waigiuensis
- Salvation Fish: Thaleichthys pacificus
- Salvia Ovaticoccin: Ovaticoccus salviae
- Salvin’s Albatross: Thalassarche salvini
- Salvin’s Anetia: Anetia cubana
- Salvin’s Big-Eyed Bat: Chiroderma salvini
- Salvin’s Cichlid: Cichlasoma salvini
- Salvin’s Curassow: Mitu salvini
- Salvin’s Spiny Pocket Mouse: Liomys salvini
- Salvin’s White-Lined Bat: Chiroderma salvini
- Salvina Skipper: Ouleus salvina
- Salvini: Cichlasoma salvini
- Salvini Clearwing: Athyrtis mechanitis salvini
- Salvinia Clearwing: Episcada salvinia
- Salvinia Grasshopper: Paulinia acuminata
- Salvinia Weevil: Cyrtobagous salviniae
- Sam Soldier: Neoniphon sammara
- Samana Hutia: Plagiodontia ipnaeum
- Samango Monkey: Cercopithecus mitis labiatus
- Samar Hornbill: Penelopides affinis
- Samar Squirrel: Sundasciurus samarensis
- Sambar: Cervus unicolor, Cervus unicolor hainana
- Sambar Deer: Cervus unicolor
- Sammara Squirrelfish: Neoniphon sammara
- Sammy Johnson: Scarus iseri, Scarus taeniopterus, Sparisoma atomarium
- Samoa Flying Fox: Pteropus samoensis
- Samoa Flying-Fox: Pteropus samoensis
- Samoan pipefish: Halicampus mataafae
- Samoan Anchovy: Stolephorus apiensis
- Samoan Cardinalfish: Apogon savayensis
- Samoan Emoia: Emoia samoensis
- Samoan Flycatcher: Myiagra albiventris
- Samoan Flying Fox: Pteropus samoensis
- Samoan Fruit Bat: Pteropus samoensis
- Samoan Goatfish: Alocyttus verrucosus, Mulloidichthys flavolineatus
- Samoan Moorhen: Gallinula pacifica
- Samoan Mullet Goby: Mugilogobius fontinalis
- Samoan Pipefish: Halicampus mataafae
- Samoan Sand Dart: Kraemeria samoensis
- Samoan Silverside: Hypoatherina temminckii
- Samoan Skink: Emoia samoensis
- Samoan Snapper: Lutjanus mizenkoi
- Samoan Starling: Aplonis atrifusca
- Samoan Surf Sardine: Iso nesiotes
- Samoan Triller: Lalage sharpei
- Samoan White-Eye: Zosterops samoensis
- Samon: Elagatis bipinnulata
- Sampa: Heterobranchus longifilis
- Sampson’s Naiad: Epioblasma sampsonii
- Samson Fish: Seriola hippos
- Samson-Fish: Seriola hippos
- Samsonfish: Seriola hippos
- Samudra Sasha: Uroteuthis duvauceli
- samurai Squirrelfish: Sargocentron ittodai
- San Agustin Mountainsnail: Oreohelix litoralis
- San Andreas Woodlandsnail: Ashmunella kochii, Ashmunella kochii caballoensis, Ashmunella kochii sanandresensis
- San Andres Woodlandsnail: Ashmunella kochii
- San Antonio Pocket Gopher: Thomomys bottae curtatus
- San Augustin Mountainsnail: Oreohelix litoralis
- San Bernadino Springsnail: Pyrgulopsis bernardina
- San Bernardino Flying Squirrel: Glaucomys sabrinus californicus
- San Bernardino Kangaroo Rat: Dipodomys merriami parvus
- San Bernardino Merriam’s Kangaroo Rat: Dipodomys merriami parvus
- San Bernardino Mountain Kingsnake: Lampropeltis zonata parvirubra
- San Bernardino Ringneck Snake: Diadophis punctatus modestus
- San Bernardino Springsnail: Pyrgulopsis bernardina
- San Blas Skate: Dipturus garricki
- San Bruno Elfin: Callophrys mossii bayensis, Incisalia fotis bayensis
- San Bruno Elfin Butterfly: Callophrys mossii bayensis
- San Carlos Threeband: Humboldtiana hoegiana, Humboldtiana hoegiana praesidii
- San Clemente Beetle: Coenonycha clementina
- San Clemente Bewick’s Wren: Thryomanes bewickii leucophrys
- San Clemente Deer Mouse: Peromyscus maniculatus, Peromyscus maniculatus clementis
- San Clemente Dovesnail: Mitrella clementensis
- San Clemente Island Fox: Urocyon littoralis clementae
- San Clemente Islandsnail: Micrarionta gabbii
- San Clemente Loggerhead Shrike: Lanius ludovicianus, Lanius ludovicianus mearnsi
- San Clemente Sage Sparrow: Amphispiza belli clementeae
- San Cristobal Leaf-Toed Gecko: Phyllodactylus leei
- San Cristobal Shrew: Sorex stizodon
- San Diego Aligena: Aligena diegoana
- San Diego Alligator Lizard: Elgaria multicarinata webbii
- San Diego Banded Gecko: Coleonyx variegatus abbotti
- San Diego Cactus Wren: Campylorhynchus brunneicapillus sandiegensis
- San Diego Chalice-Bubble: Cylichna diegensis
- San Diego Chestnut: Glyptostoma newberryanum
- San Diego Datemussel: Adula diegensis
- San Diego Desert Woodrat: Neotoma lepida intermedia
- San Diego Dorid: Dialula sandiegensis
- San Diego Fairy Shrimp: Branchinecta sandiegonensis
- San Diego Gopher Snake: Pituophis catenifer annectens
- San Diego Horned Lizard: Phrynosoma coronatum blainvillii
- San Diego Lamellaria: Lamellaria diegoensis
- San Diego Limops: Limopsis diegensis
- San Diego Meadow Katydid: Conocephalus spinosus
- San Diego Mountain Kingsnake: Lampropeltis zonata pulchra
- San Diego Nutclam: Nuculana spargana
- San Diego Pocket Mouse: Chaetodipus fallax, Chaetodipus fallax fallax
- San Diego Ringneck Snake: Diadophis punctatus similis
- San Diego Scallop: Euvola diegensis
- San Diego Thraciid: Asthenothaerus diegensis
- San Diego Vitrinella: Vitrinorbis diegensis
- San Domingo Cichlid: Thorichthys callolepis
- San Emigdio Blue: Plebejus emigdionis, Plebulina emigdionis
- San Esteban Island Mouse: Peromyscus stephani
- San Felipe Gambusia: Gambusia clarkhubbsi
- San Francisco Alligator Lizard: Elgaria coerulea coerulea
- San Francisco Anemone: Diadumene franciscana
- San Francisco Blue Eyed Mary: Collinsia multicolor
- San Francisco Brine Shrimp: Artemia franciscana
- San Francisco Collinsia: Collinsia multicolor
- San Francisco Croaker: Pachyurus francisci, Triphora subaura
- San Francisco Dusky-Footed Woodrat: Neotoma fuscipes annectens
- San Francisco Forktail: Ischnura gemina
- San Francisco Garter Snake: Thamnophis sirtalis tetrataenia
- San Francisco Gartersnake: Thamnophis sirtalis tetrataenia
- San Francisco Piranha: Pygocentrus piraya
- San Fransisco Lacewing: Nothochrysa californica
- San Gabriel Chestnut: Glyptostoma gabrielense
- San Gabriel Mountain Slender Salamander: Batrachoseps gabrieli
- San Gabriel Mountains Blue: Plebejus saepiolus aureolus
- San Gabriel Mountains Elfin Butterfly: Callophrys mossii hidakupa
- San Gabriel Mountains Slender Salamander: Batrachoseps gabrieli
- San Gabriel Slender Salamander: Batrachoseps gabrieli
- San Gabriel Springs Salamander: Eurycea naufragia
- San Ignacio Pupfish: Cyprinodon bobmilleri
- San Jacinto Monkey Grasshopper: Psychomastax psylla
- San Jeronimo Livebearer: Poeciliopsis fasciata
- san Joaquin Antelope Ground Squirrel: Ammospermophilus nelsoni
- San Joaquin Antelope Squirrel: Ammospermophilus nelsoni
- San Joaquin Coachwhip: Masticophis flagellum ruddocki
- San Joaquin Dune Beetle: Coelus gracilis
- San Joaquin Fence Lizard: Sceloporus occidentalis biseriatus
- san Joaquin Kangaroo Rat: Dipodomys nitratoides, Dipodomys nitratoides brevinasus, Dipodomys nitratoides exilis
- San Joaquin Kit Fox: Vulpes macrotis, Vulpes macrotis mutica, Vulpes velox mutica
- San Joaquin Pocket Mouse: Perognathus inornatus, Perognathus inornatus inornatus
- San Joaquin Shoulderband: Helminthoglypta carpenteri
- San Joaquin Valley Wood Rat: Neotoma fuscipes riparia
- San Joaquin Valley Woodrat: Neotoma fuscipes riparia
- San Jose Brush Rabbit: Sylvilagus mansuetus
- San Jose Island Kangaroo Rat: Dipodomys insularis
- San Jose Scale: Diaspidiotus perniciosus
- San Juaquin Shoulderband: Helminthoglypta carpenteri
- San Lorenzo Mouse: Peromyscus interparietalis
- San Lorenzo Shoulderband: Helminthoglypta exarata
- San Luis Obispo Pyrg: Pyrgulopsis taylori
- San Luis Tuco-Tuco: Ctenomys pontifex
- San Marcos Gambusia: Gambusia georgei
- San Marcos Saddle-case Caddisfly: Protoptila arca
- San Marcos Salamander: Eurycea nana
- San Martin Island Woodrat: Neotoma martinensis
- San Miguel Fox: Urocyon littoralis littoralis
- San Miguel Shoulderband: Helminthoglypta ayresiana
- San Nicolas Island Fox: Urocyon littoralis dickeyi
- San Nicolas Islandsnail: Micrarionta feralis
- San Pablo Song Sparrow: Melospiza melodia samuelis
- San Pablo Vole: Microtus californicus sanpabloensis
- San Pedro Auger: Terebra pedroana
- San Pedro Dwarf Olive: Olivella alectona
- San Pedro Mysella: Mysella pedroana
- San Pedro Thraciid: Cyathodonta pedroana
- San Pedro Triphora: Triphora pedroana
- San Pedrofish: Lampris guttatus
- San Quintin Blenny: Paraclinus walkeri
- San Quintin Kangaroo Rat: Dipodomys gravipes
- San Salvador Iguana: Cyclura rileyi rileyi
- San Salvador Rock Iguana: Cyclura rileyi cristata
- San Simeon Slender Salamander: Batrachoseps incognitus
- San Tomas Ambersnail: Succinea californica
- San Xavier Talussnail: Sonorella eremita
- Sanaga Pygmy Herring: Thrattidion noctivagus
- Sanborn Crayfish: Orconectes sanbornii
- Sanborn’s Akodont: Abrothrix sanborni
- Sanborn’s Bonneted Bat: Eumops hansae
- Sanborn’s Flying Fox: Pteropus mahaganus
- Sanborn’s Grass Mouse: Akodon sanborni
- Sanborn’s Mastiff-Bat: Eumops hansae
- Sanborn’s Squirrel: Sciurus sanborni
- Sanchez´ Western Bird Argas: Argas sanchezi
- Sand Bass: Paralabrax nebulifer, Psammoperca waigiensis
- Sand Bee: Microbembix monodonta
- Sand Border: Sillago sihama
- Sand Borer: Sillago maculata
- Sand Burrowing Brittle Star: Acrocnida brachiata
- Sand Cat: Felis margarita
- Sand Catfish: Arius arenarius
- Sand Catlet: Zaireichthys rotundiceps
- Sand Crawler: Megalobulimus seperabilis, Sticharium dorsale
- Sand Dab: Limanda limanda, Notodoris serenae, Scophthalmus aquosus
- Sand Dart: Chalixodytes chameleontoculis, Kraemeria samoensis
- Sand Devil: Squatina dumeril, Turbonilla linearis
- Sand Diver: Platydema laticolle, Schizochirus insolens, Synodus intermedius, Tewara cranwellae, Trichonotus filamentosus, Trichonotus marleyi
- Sand Dollar: Clypeaster subdepressus, Dendraster excentricus, Echinarachnius parma
- Sand Dragonet: Callionymus marleyi
- Sand Drum: Umbrina coroides
- Sand Dune Lizard: Sceloporus arenicolus
- Sand Dune Panic Grass Moth: Coenochroa bipunctella
- Sand Eel: Ammodytes americanus, Ammodytes dubius, Ammodytes marinus, Gonorynchus gonorynchus, Ichthyapus ophioneus, Malacanthus plumieri
- Sand Eriococcin: Eriococcus arenosus
- Sand Fish: Awaous tajasica, Holothuria scabra
- Sand Flathead: Eurycephalus arenicola, Platycephalus arenarius, Platycephalus bassensis, Platycephalus caeruleopunctatus, Plesiops sp, Serrata stanislas
- Sand Flounder: Limanda punctatissimus, Pseudopleuronectes schrenki, Rhombosolea plebeia
- Sand Fox: Vulpes ferrilata
- Sand Frog: Heleioporus psammophilus
- Sand Gazelle: Gazella subgutturosa marica
- Sand Gerbil: Gerbillus syrticus
- Sand Ghost Shrimp: Callianassa tyrrhena
- Sand Goanna: Varanus gouldii
- Sand Goby: Coryphopterus glaucofraenum, Fusigobius neophytus, Neogobius fluviatilis, Neogobius fluviatilis fluviatilis , Neogobius fluviatilis pallasi, Pomatoschistus minutus
- Sand Goldenheather: Hudsonia tomentosa var. intermedia Peck
- Sand Greenfish: Socienna angasi, Xyrichtys sanctaehelenae
- Sand Grey Mullet: Myxus elongatus
- Sand Grunt: Haemulon parra, Pomadasys branickii
- Sand Lance: Ammodytes americanus, Ammodytes dubius, Ammodytes hexapterus, Ammodytes marinus
- Sand Lizard: Lacerta agilis
- Sand Lizardfish: Synodus dermatogenys
- Sand Loach: Acanthocobitis botia
- Sand Locust: Psinidia fenestralis
- Sand Longeye Shrimp: Ogyrides hayi
- Sand Lyria: Enaeta cylleniformis
- Sand Mackerel: Phalacrocorax sulcilostris, Trachinotus goodei, Trachinotus goreensis
- Sand Martin Tick: Ixodes lividus
- Sand Mountain Blue: Euphilotes pallescens arenamontana
- Sand Mountain Serican Scarab Beetle: Serica psammobunus
- Sand Mountain Supercoil: Paravitrea smithi
- Sand Mullet: Myxus elongatus
- Sand Nudibranch: Unela remanei
- Sand Partridge: Ammoperdix heyi
- Sand Perch: Diplectrum formosum, Diplectrum macropoma, Parapercis schauinslandii, Psammoperca waigiensis
- Sand Pickerel: Sander canadensis
- Sand Pike: Sander canadensis
- Sand Pine Sawfly: Neodiprion pratti
- Sand Roller: Percopsis transmontana
- Sand Sculpin: Leocottus kesslerii
- Sand Seabass: Diplectrum formosum
- sand Seatrout: Cynoscion arenarius
- Sand Shark: Carcharias taurus, Ginglymostoma cirratum, Odontaspis ferox, Rhinobatos schlegelii, Rhynchobatus djiddensis
- Sand Shiner: Notropis stramineus
- Sand Shrimp: Crangon septemspinosa
- Sand Sillago: Sillago ciliata
- Sand Skate Shark: Rhinobatos schlegelii
- Sand Skink: Neoseps reynoldsi
- Sand Slug: Unela remanei
- Sand Smelt: Atherina hepsetus, Atherina presbyter
- Sand Snake: Chilomeniscus stramineus
- Sand Snake Eel: Ophisurus serpens
- Sand Snake-Eel: Ophisurus serpens
- Sand Snaketail: Ophiogomphus smithi
- Sand Snapper: Lethrinus nebulosus
- Sand Snapping Shrimp: Alpheus floridanus
- Sand Sole: Cynoglossus capensis, Pegusa lascaris, Psettichthys melanostictus
- Sand Stargazer: Crapatalus novaezelandiae, Dactyloscopus tridigitatus
- Sand Steenbras: Lithognathus mormyrus
- Sand Sturgeon: Scaphirhynchus platorynchus
- Sand Submarine: Kaliella tonkinensis, Limnichthys nitidus
- Sand Tampan: Ornithodoros savignyi
- Sand Tiger: Carcharias taurus
- Sand Tiger Shark: Carcharias taurus, Odontaspis ferox
- Sand Tilefish: Malacanthus latovittatus, Malacanthus plumieri
- Sand Tonguefish: Cynoglossus capensis
- sand Trevally: Pseudocaranx wrighti
- sand Trout: Cynoscion arenarius
- sand Weakfish: Cynoscion arenarius
- Sand Weke: Alocyttus verrucosus, Mulloidichthys flavolineatus
- Sand Whiff: Citharichthys arenaceus
- Sand Whiting: Menticirrhus americanus, Sillago ciliata, Sillago sihama
- Sand Wrasse: Coris ballieui
- Sand-Bass: Psammoperca waigiensis
- Sand-Colored Soft-Furred Rat: Millardia gleadowi
- Sand-Coloured Rat: Millardia gleadowi
- Sand-Dollar Pea Crab: Dissodactylus mellitae
- Sand-Eel: Ammodytes tobianus
- Sand-Lance: Ammodytes hexapterus
- Sand-Loving Mealybug: Longicoccus psammophilus
- Sand-Perch: Diplectrum conceptione
- Sand-Pride: Lampetra planeri, Tonna luteostomum
- Sand-Smelt: Atherina presbyter
- Sandager’s Wrasse: Coris sandeyeri
- Sandal-eyed Squid: Sandalops melancholicus
- Sandbank Pocketbook: Lampsilis satura
- Sandbar Pebblesnail: Somatogyrus depressus
- sandbar Shark: Carcharhinus plumbeus
- Sandbar Shiner: Notropis scepticus
- Sandbar Tiger Beetle: Cicindela blanda
- Sandbird Octopus: Octopus kagoshimensis
- Sandbowl Snail: Catinella arenaria
- Sanddab: Citharichthys sordidus
- Sande’s Mouth Almighty: Glossamia sandei
- Sandeel: Ammodytes tobianus
- Sander’s Tobacco: Drepanogynis nicotiana
- Sanderling: Calidris alba
- Sandfish: Crapatalus angusticeps, Crapatalus novaezelandiae, Diplectrum formosum, Gonorynchus forsteri, Gonorynchus gonorynchus, Gonorynchus greyi, Malacanthus plumieri, Serranus tabacarius
- Sandflat Elbow Crab: Heterocrypta occidentalis
- Sandhill Bluet: Enallagma davisi
- Sandhill Clubtail: Gomphus cavillaris
- Sandhill Crane: Grus canadensis, Grus canadensis canadensis, Grus canadensis nesiotes, Grus canadensis pratensis, Grus canadensis pulla, Grus canadensis tabida
- Sandhill Dunnart: Sminthopsis psammophila
- Sandhill Frog: Arenophryne rotunda
- Sandhill Skipper: Polites sabuleti, Polites sabuleti channelensis, Polites sabuleti ministigma
- Sandhill Virtuoso Katydid: Amblycorypha arenicola
- Sandhills Chub: Semotilus lumbee
- Sandhills Crayfish: Procambarus angustatus, Procambarus pearsei
- Sandhills Ground Cricket: Pictonemobius arenicola
- Sandhills Spiny Crayfish: Cambarus hystricosus
- Sandia Hairstreak: Callophrys mcfarlandi
- Sandkhol Carp: Thynnichthys sandkhol
- Sandloving Stargazer: Gillellus arenicola
- Sandpaper Coral: Psammocora nierstraszi
- Sandpaper Fish: Adventor elongatus, Coelostemma scaphopleuron, Paratrachichthys trailli
- Sandpaper Skate: Bathyraja interrupta
- Sandpaper Trophon: Nipponotrophon lasius, Scabrotrophon lasius
- Sandperch: Diplectrum formosum, Parapercis colias, Patula calliope, Pinguipes chilensis
- Sandpiper: Actitis macularia
- Sandpipers: Actitis hypoleucos, Heteroscelus brevipes, Heteroscelus incanus, Xenus cinereus
- Sandshark: Rhinobatos annulatus, Rhinobatos blochii, Rhynchobatus australiae
- Sandsmelt: Atherina presbyter, Atherinomorus lacunosus
- Sandspear: Trachinocephalus myops
- Sandstar: Luidia foliolata
- Sandstone Dibbler: Pseudantechinus bilarni
- Sandstone Night Lizard: Cnemidophorus lemniscatus, Xantusia henshawi, Xantusia henshawi gracilis
- Sandtiger Shark: Carcharias taurus
- Sandtop Goby: Gobulus hancocki
- Sandtrout: Cynoscion regalis
- Sandwich Island Sleeper: Eleotris sandwicensis
- sandwich Isle File: Cantherhines sandwichiensis
- Sandwich Tern: Sterna sandvicensis, Sterna sandvicensis eurygnatha
- Sandworm: Nephtys ferruginea
- Sandwort: Arenaria pseudoacantholimon, Arenaria verna ’Aurea’
- Sandy: Rhynchobatus djiddensis
- Sandy Anemone: Epiactis ritteri
- Sandy Burrowing Frog: Limnodynastes spenceri
- Sandy Dab: Limanda ferruginea
- Sandy Damsel: Naninia rufostrigata, Pomacentrus nagasakiensis
- Sandy Dogfish: Scyliorhinus canicula
- Sandy Filefish: Thamnaconus arenaceus
- Sandy Flathead: Platycephalus bassensis, Serrata stanislas
- Sandy Goggle: Haemulon aurolineatum
- Sandy Inland Mouse: Pseudomys hermannsburgensis
- Sandy Lyonsia: Lyonsia arenosa
- Sandy Mole Rat: Spalax arenarius
- Sandy Pandora: Pandora arenosa
- Sandy Prawn-Goby: Ctenogobiops feroculus
- Sandy Pygmy Rice Rat: Oligoryzomys arenalis
- Sandy Ray: Leucoraja circularis, Leucoraja naevus
- Sandy Ridgefin Eel: Callechelys cliffi
- Sandy Scops-Owl: Otus icterorhynchus
- Sandy Skate: Leucoraja circularis, Rajella fyllae
- Sandy Spinefoot: Siganus fuscescens
- Sandy Sprat: Hyperlophus vittatus
- Sandy Stargazer: Gillellus arenicola
- Sandy Stream Tiger Beetle: Cicindela macra, Cicindela macra fluviatilis, Cicindela macra macra
- Sandy Tiger Beetle: Cicindela limbata, Cicindela limbata hyperborea, Cicindela limbata limbata, Cicindela limbata nympha
- Sandyback Stingaree: Urolophus bucculentus
- Sandyland Scrubsnail: Praticolella pachyloma
- Sandyland Shrubsnail: Praticolella pachyloma
- Sanesia Yoldia: Yoldiella sanesia
- Sanford Talussnail: Sonorella tryoniana
- Sanford’s Brown Lemur: Eulemur fulvus sanfordi
- Sanford’s Fish-Eagle: Haliaeetus sanfordi
- Sanford’s Rock Ptarmigan: Lagopus muta sanfordi
- Sanford’s White-Eye: Woodfordia lacertosa
- Sangi Cardinalfish: Apogon sangiensis
- Sangihe Hanging-Parrot: Loriculus catamene
- Sangihe Shrike-thrush: Colluricincla sanghirensis
- Sangihe White-Eye: Zosterops nehrkorni
- Sangre De Cristo Peaclam: Pisidium sanguinichristi
- Sangre De Cristo Woodlandsnail: Ashmunella thompsoniana, Ashmunella thomsoniana
- Sanguine Frogfish: Antennarius sanguineus
- Sanibel Ambersnail: Succinea barberi
- Sanje Crested Mangabey: Cercocebus galeritus sanjei
- Sanseveria Scale: Parlatoria proteus
- Santa Ana Stickleback: Gasterosteus aculeatus santaeannae
- Santa Ana Sucker: Catostomus santaanae, Catostomus santaanea
- Santa Barbara Cerith: Finella barbarensis
- Santa Barbara Cleftclam: Thyasira barbarensis
- Santa Barbara Cyclocardia: Cyclocardia barbarensis
- Santa Barbara Glass-Scallop: Cyclopecten barbarensis
- Santa Barbara Islandsnail: Micrarionta facta
- Santa Barbara Rocksnail: Ocenebra barbarensis, Ocinebrina barbarensis
- Santa Barbara Scallop: Cyclopecten barbarensis
- Santa Barbara Shelled Slug: Binneya notabilis
- Santa Barbara Shelledslug: Binneya notabilis
- Santa Barbara Simnia: Neosimnia barbarensis, Spiculata barbarensis
- Santa Barbara Song Sparrow: Melospiza melodia graminea
- Santa Barbara Spindle: Fusinus barbarensis
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