Custom Species Lists
- Glaux maritima - (Sea Milkwort)
- Enhydra lutris - (Sea Otter)
- Stylatula elongata - (Sea Whip)
- Distichlis spicata - (Seashore Saltgrass)
- Hypogymnia heterophylla - (Seaside Bone Lichen)
- Hypogymnia oceanica - (Seaside Tube Lichen)
- Raglius alboacuminatus - (Seed Bug)
- Luetkea pectinata - (Segmented Luetkea)
- Charadrius semipalmatus - (Semipalmated Plover)
- Calidris pusilla - (Semipalmated Sandpiper)
- Musculista senhousia - (Senhouse Mussel)
- Phyllospadix serrulatus - (Serrulate Surf-grass)
- Carex pluriflora - (Several-flowered Sedge)
- Aplodontia rufa - (Sewellel)
- Lepidium oxycarpum - (Sharp-pod Pepper-grass)
- Accipiter striatus - (Sharp-shinned Hawk)
- Calidris acuminata - (Sharp-tailed Sandpiper)
- Sebastes zacentrus - (Sharpchin Rockfish)
- Scyra acutifrons - (Sharpnose Crab)
- Clinocottus acuticeps - (Sharpnose Sculpin)
- Cyprinodon variegatus - (Sheepshead Minnow)
- Cymatogaster aggregata - (Shiner Perch)
- Geranium lucidum - (Shining Crane's-bill)
- Carex lenticularis - (Shore Sedge)
- Delphinus delphis - (Short-beaked Common Dolphin )
- Limnodromus griseus - (Short-billed Dowitcher)
- Asio flammeus - (Short-eared Owl)
- Globicephala macrorhynchus - (Short-finned Pilot Whale)
- Centaurea nigrescens - (Short-fringe Starthistle)
- Pisaster brevispinus - (Short-spined Star)
- Puffinus tenuirostris - (Short-tailed Shearwater)
- Lycodes brevipes - (Shortfin Eelpout)
- Festuca brachyphylla - (Shortleaf Fescue)
- Sebastolobus alascanus - (Shortspine Thornyhead )
- Liparis pulchellus - (Showy Snailfish)
- Neurotrichus gibbsii - (Shrew-mole)
- Boykinia intermedia - (Sierra Brookfoam)
- Ambrosia chamissonis - (Silver Bursage)
- Hyperprosopon ellipticum - (Silver Surfperch)
- Lasionycteris noctivagans - (Silver-haired Bat)
- Sebastes brevispinis - (Silvergray Rockfish)
- Solanum elaeagnifolium - (Silverleaf Nightshade)
- Blepsias cirrhosus - (Silverspotted Sculpin)
- Clintonia uniflora - (Single-flowered Clintonia)
- Packera macounii - (Siskiyou Mountains Butterweed)
- Alnus viridis ssp. sinuata - (Sitka Alder)
- Carex aquatilis var. dives - (Sitka Sedge)
- Picea sitchensis - (Sitka Spruce)
- Salix sitchensis - (Sitka Willow)
- Leptasterias hexactis - (Six-rayed Sea Star)
- Larus schistisagus - (Slaty-backed Gull)
- Anoplarchus insignis - (Slender Cockscomb)
- Oxytropis campestris var. gracilis - (Slender Crazyweed)
- Brachypodium sylvaticum - (Slender False Brome)
- Benthodesmus tenuis - (Slender Frostfish)
- Virgularia mirabilis - (Slender Sea Pen)
- Carex lasiocarpa - (Slender Sedge)
- Nemichthys scolopaceus - (Slender Snipe Eel)
- Lyopsetta exilis - (Slender Sole)
- Carduus tenuiflorus - (Slender-flower Thistle)
- Caltha leptosepala - (Slender-sepal Marsh-marigold)
- Trachemys scripta - (Slider)
- Radulinus asprellus - (Slim Sculpin)
- Pteraster tesselatus - (Slime Star)
- Liparis mucosus - (Slimy snailfish)
- Liparis fucensis - (Slipskin Snailfish)
- Carex obnupta - (Slough Sedge)
- Anchusa arvensis - (Small Bugloss)
- Vaccinium oxycoccos - (Small Cranberry)
- Platanthera obtusata - (Small Northern Bog Orchid)
- Trillium parviflorum - (Small-flowered Trillium)
- Cuscuta approximata - (Small-seed Alfalfa Dodder)
- Lycodapus parviceps - (Smallhead eelpout)
- Micropterus dolomieu - (Smallmouth Bass)
- Carex proposita - (Smoky Mountain Sedge)
- Anoplagonus inermis - (Smooth Alligatorfish)
- Hieracium laevigatum - (Smooth Hawkweed)
- Xeneretmus leiops - (Smootheye poacher)
- Artedius lateralis - (Smoothhead Sculpin)
- Lumpenus sagitta - (Snake Prickleback)
- Chelydra serpentina - (Snapping Turtle)
- Plectrophenax nivalis - (Snow Bunting)
- Chen caerulescens - (Snow Goose)
- Salix nivalis - (Snow Willow)
- Symphoricarpos albus - (Snowberry)
- Lepus americanus - (Snowshoe Hare)
- Bubo scandiacus - (Snowy Owl)
- Oncorhynchus nerka - (Sockeye Salmon)
- Oncorhynchus nerka pop. 7 - (Sockeye Salmon - Cultus Lake )
- Oncorhynchus nerka pop. 8 - (Sockeye Salmon - Sakinaw Lake)
- Psychrolutes sigalutes - (Soft Sculpin)
- Mya arenaria - (Softshell)
- Schoenoplectus tabernaemontani - (Softstem Bulrush)
- Tringa solitaria - (Solitary Sandpiper)
- Melospiza melodia - (Song Sparrow)
- Dendragapus fuliginosus - (Sooty Grouse)
- Puffinus griseus - (Sooty Shearwater)
- Porzana carolina - (Sora)
- Stercorarius maccormicki - (South Polar Skua)
- Xiphophorus maculatus - (Southern Platyfish)