Endangered Species Search by Area Selection


Find out if there are any endangered species in your state, your country, island, etc. Browse endangered species listings according to area on our planet using the selection box below.

For a complete list of US endangered species, select United States below. Browse the different areas in the pulldown for other countries or specific US or Canadian states. For sea creatures and creatures found on islands in the oceans, we recommend browsing the oceania list.

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Note/Disclaimer: This list is made possible through a database keyword search/filtering process which may not be 100% accurate. Therefore, all endangered species of California may not be listed here. For a complete list of endangered species in North America, browse the North America endangered species list or see the complete United States List.

Endangered species found in California:

This list combines species from several endangered species lists. Using the total at the bottom of this page as an official count of endangered species of the world is not recommended. For more information on what creatures are listed on this site, please visit our About Us page.

 Species NameScientific NameGroupRange
1. Allyn Smith's Banded Snail Helminthoglypta allynsmithi Snails California
2. Amargosa Niterwort Nitrophila mohavensis Plants California, Nevada
3. Amargosa Vole Microtus californicus scirpensis Mammals California
4. Antioch Dunes Evening-primrose Oenothera deltoides ssp. howellii Plants California
5. Arroyo Southwestern Toad Bufo californicus microscaphus Amphibians California, Mexico
6. Ashy Storm-petrel Oceanodroma homochroa Birds California, Ecuador, Mexico
7. Avalon Hairstreak Strymon avalona Insects California
8. Baker's Cypress Cupressus bakeri Plants California, Oregon
9. Baker's Larkspur Delphinium bakeri Plants California
10. Beach Layia Layia carnosa Plants California
11. Bedstraw Galium buxifolium Plants California
12. Bedstraw Galium californicum ssp. sierrae Plants California
13. Belkin's Dune Tabanid Fly Brennania belkini Insects California, Mexico
14. Bell's Vireo Vireo bellii Birds California, El Salvador, Guatemala, Honduras, Mexico, Nicaragua
15. Ben Lomond Spineflower Chorizanthe pungens var. hartwegiana Plants California
16. Ben Lomond Wallflower Erysimum teretifolium Plants California
17. Bendire's Thrasher Toxostoma bendirei Birds Arizona, California, Canada, Mexico, Nevada, New Mexico, Utah
18. Berberis pinnata ssp. insularis Berberis pinnata ssp. insularis Plants California
19. Berberis nevinii Berberis nevinii Plants California
20. Bicolor Cactus Snail Xerarionta tryoni Snails California
21. Bighorn Sheep Ovis canadensis Mammals California
22. Black Abalone Haliotis cracherodii Snails California, Mexico (Baja California)
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23. Black Rail Laterallus jamaicensis Birds Central America, North America (including United States), South America
24. Black Sea Bass Stereolepis gigas Fishes California, Mexico
25. Black Toad Anaxyrus exsul Amphibians California
26. Black-vented Shearwater Puffinus opisthomelas Birds Mexico, United States (California)
27. Blunt-nosed Leopard Lizard Gambelia silus Reptiles California
28. Bocaccio Rockfish Sebastes paucispinus Fishes Canada, Mexico, United States
29. Boisduval's Blue Butterfly Aricia icarioides Insects California, Oregon
30. Bonytail Chub Gila elegans Fishes Arizona, California, Colorado, Nevada, Utah, Wyoming
31. Braunton's Milk-vetch Astragalus brauntonii Plants California
32. Bronze Whaler Carcharhinus brachyurus Fishes Africa, Asia, Australia, Europe, Middle East, North America (including United States), South America
33. Brown Pelican Pelecanus occidentalis Birds Coastal Central and South America, USA (Carolinas to Texas, California, Oregon, Washington), West Indies
34. Buena Vista Lake Ornate Shrew Sorex ornatus relictus Mammals California
35. Buff-breasted Sandpiper Tryngites subruficollis Birds Africa, Australia, Central America, Europe, Middle East, North America (including United States Territory), Oceanic, South America
36. Bullseye Electric Ray Diplobatus ommata Fishes California, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama
37. Burke's Goldfields Lasthenia burkei Plants California
38. California Bay Pea Crab Parapinnixa affinis Crustaceans California
39. California Condor  WATCH A LIVE CALIFORNIA CONDOR Gymnogyps californianus Birds California
40. California Freshwater Shrimp Syncaris pacifica Crustaceans California
41. California Giant Salamander Dicamptodon ensatus Amphibians California
42. California Jewelflower Caulanthus californicus Plants California
43. California Orcutt Grass Orcuttia californica Plants California
44. California Red Tree Mouse Arborimus pomo Mammals California
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45. California Red-legged Frog Rana draytonii Amphibians California, Mexico
46. California Seablite Suaeda californica Plants California
47. California Sheephead Semicossyphus pulcher Fishes Mexico, United States (California)
48. California Taraxacum Taraxacum californicum Plants California
49. California Tiger Salamander Ambystoma californiense Amphibians California
50. Calistoga Allocarya Plagiobothrys strictus Plants California
51. Callippe Silverspot Butterfly Speyeria callippe callippe Insects California
52. Campbell's Liverwort Geothallus tuberosus Plants California
53. Carex albida Carex albida Plants California
54. Carson Wandering Skipper Pseudocopaeodes eunus obscurus Insects California, Nevada
55. Cascades Frog Rana cascadae Amphibians California, Canada
56. Cassin's Finch Haemorhous cassinii Birds Canada, Mexico, United States
57. Catalina Island Mountain-Mahogany Cercocarpus traskiae Plants California
58. Catalina Mountain Snail Radiocentrum avalonense Snails California
59. Chestnut-collared Longspur Calcarius ornatus Birds North America (including United States)
60. Chinook Salmon Oncorhynchus tshawytscha Fishes California (Sacramento River) in the winters
61. Ciervo Scarab Beetle Aegialia concinna Insects California
62. Clapper Rail Rallus longirostris Birds Arizona, California
63. Clara Hunt's Milk-vetch Astragalus clarianus Plants California
64. Clouded Salamander Aneides ferreus Amphibians California, Oregon
65. Clover Lupine Lupinus tidestromii Plants California
66. Coachelia Giant Sand Treader Cricket Macrobaenetes valgum Insects California
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67. Coachella Valley Fringe-toed Lizard Uma inornata Reptiles California
68. Coachella Valley Jerusalem Cricket Stenopelmatus cahuilaensis Insects California
69. Coachella Valley Milk-vetch Astragalus lentiginosus var. coachellae Plants California
70. Coast Redwood Sequoia sempervirens Plants California, Oregon
71. Coastal Dunes Milk-vetch Astragalus tener var. titi Plants California
72. Coho Salmon Oncorhynchus kisutch Fishes California
73. Colorado Desert Fringe-toed Lizard Uma notata Reptiles California, Mexico
74. Colorado Pikeminnow Ptychocheilus lucius Fishes Arizona, California, Colorado, Mexico, Nevada, New Mexico, Utah, Wyoming
75. Common Sawfish Pristis pristis Fishes Africa, Asia, Australia, Central and South America, Europe, Mexico, United States
76. Concentrated Snail Micrarionta facta Snails California
77. Conservancy Fairy Shrimp Branchinecta conservatio Crustaceans California
78. Contra Costa Goldfields Lasthenia conjugens Plants California
79. Contra Costa Wallflower Erysimum capitatum var. angustatum Plants California
80. Cougar  WATCH A LIVE COUGAR Puma concolor Mammals North and Central America
81. Coyote Ceanothus Ceanothus ferrisae Plants California
82. Craveri's Murrelet Synthliboramphus craveri Birds California, Mexico
83. Cushenbury Milk-vetch Astragalus albens Plants California
84. Cushenbury Oxytheca Oxytheca parishii var. goodmaniana Plants California
85. Cushion Buckwheat Eriogonum ovalifolium Plants California, Nevada
86. Del Mar Manzanita Arctostaphylos glandulosa ssp. crassifolia Plants California, Mexico
87. Del Norte Salamander Plethodon elongatus Amphibians California
88. Delhi Sands Flower-loving Fly Rhaphiomidas terminatus abdominalis Insects California
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89. Delta Green Ground Beetle Elaphrus viridis Insects California
90. Delta Smelt Hypomesus transpacificus Fishes California
91. Desert Pupfish Cyprinodon macularius Fishes Arizona, California, Mexico
92. Desert Slender Salamander Batrachoseps aridus Amphibians California
93. Desert Tortoise Gopherus agassizii Reptiles Arizona, California, Mexico, Nevada, Utah
94. Devil Fish Manta birostris Fishes Africa, Asia, Australia, Central America, Europe, Hawaii, Middle East, North America, Oceanic, South America
95. Dolloff Cave Spider Meta dolloff Arachnids California, Texas
96. El Segundo Blue Butterfly Euphilotes battoides allyni Insects California
97. Emerald Valvata Valvata virens Snails California
98. Empire Cave Pseudoscorpion Fissilicreagris imperialis Arachnids California
99. Eureka Dune Grass Swallenia alexandrae Plants California
100. Eureka Valley Evening-primrose Oenothera avita ssp. eurekensis Plants California
101. Few-flowered Navarretia Navarretia leucocephala ssp. pauciflora Plants California
102. Flat-tailed Horned Lizard Phrynosoma mcallii Reptiles Arizona, California, Mexico
103. Foothill Yellow-legged Frog Rana boylii Amphibians California, Mexico, Oregon
104. Fountain Thistle Cirsium fontinale Plants California
105. Franklin's Bumble Bee Bombus franklini Insects California, Oregon
106. Fraternal Snail Micrarionta feralis Snails California
107. Frilled Shark Chlamydoselachus anguineus Fishes Angola, Australia, Chile, France, Guyana, Japan, Mauritania, Morocco, Namibia, New Zealand, Norway, Portugal (Madeira), South Africa, Spain, United Kingdom, United States (California)
108. Gabb's Snail Micrarionta gabbii Snails California
109. Galapagos Shark Carcharhinus galapagensis Fishes Africa, Asia, Australia, Central America, Europe, North America (Hawaii/US Territory), Oceanic, South America
110. Gambel's Watercress Rorippa gambellii Plants California
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111. Gaviota Tarplant Deinandra increscens ssp. villosa Plants California
112. Giant Garter Snake Thamnophis gigas Reptiles California
113. Giant Kangaroo Rat Dipodomys ingens Mammals California
114. Giant Sequoia Sequoiadendron giganteum Plants United States (California)
115. Gila Monster Heloderma suspectum Reptiles Mexico, United States
116. Gilia Gilia tenuiflora Plants California
117. Globose Dune Beetle Coelus globosus Insects California, Mexico
118. Gowen Cypress Cupressus goveniana Plants California
119. Grady's Cave Amphipod Stygobromus gradyi Crustaceans California
120. Gray Wolf  WATCH A LIVE GRAY WOLF Canis lupus Mammals Mexico, United States
121. Great Basin Bristlecone Pine Pinus longaeva Plants California, Nevada, Utah
122. Greater Sage-grouse Centrocercus urophasianus Birds Canada, United States
123. Green Sturgeon Acipenser medirostris Fishes Alaska, California, Canada (British Columbia), Mexico, Oregon
124. Greene's Tuctoria Tuctoria greenei Plants California
125. Guadalupe Fur Seal Arctocephalus townsendi Mammals California, Mexico
126. Guadalupe Island Cypress Cupressus guadalupensis Plants California, Mexico
127. Gulf Grouper Mycteroperca jordani Fishes California, Mexico
128. Hairy Orcutt Grass Orcuttia pilosa Plants California
129. Hammerhead Shark Sphyrna mokarran Fishes Africa, Asia, Australia, Central and South America, Middle East, Oceanic, United States
130. Hara's Cave Amphipod Stygobromus harai Crustaceans California
131. Hartweg's Golden Sunburst Pseudobahia bahiifolia Plants California
132. Heermann's Gull Larus heermanni Birds Arizona, California, Canada, Guatemala, Mexico, Oregon, Washington
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133. Hermes Copper Lycaena hermes Insects California, Mexico
134. Hesperodiaptomus californiensis Hesperodiaptomus californiensis Crustaceans California
135. Hickman's Potentilla Potentilla hickmanii Plants California
136. Hoffmann's Rock-cress Arabis hoffmannii Plants California
137. Howell's Spineflower Chorizanthe howellii Plants California
138. Indian Knob Mountain Balm Eriodictyon altissimum Plants California
139. Inyo Mountains Salamander Batrachoseps campi Amphibians California
140. Ione Buckwheat Eriogonum apricum Plants California
141. Ischnura gemina Ischnura gemina Insects California
142. Island Fox Urocyon littoralis Mammals California
143. Island Malacothrix Malacothrix squalida Plants California
144. Island Phacelia Phacelia insularis ssp. insularis Plants California
145. Island Scrub-jay Aphelocoma insularis Birds California
146. Jaguar  WATCH A LIVE JAGUAR Panthera onca Mammals Arizona, California, Central and South America, Louisiana, Mexico, New Mexico, Texas
147. Japanese Devilray Mobula japanica Fishes Africa, Asia, Australia, Central America, Hawaii, Middle East, North America, Oceanic, South America
148. Kangaroo Rat Dipodomys nitratoides Mammals California
149. Keck's Checker-mallow Sidalcea keckii Plants California
150. Keeled Sideband Monadenia circumcarinata Snails California
151. Kelso Giant Sand Treader Cricket Macrobaenetes kelsoensis Insects California
152. Kelso Jerusalem Cricket Ammopelmatus kelsoensis Insects California
153. Kern Canyon Slender Salamander Batrachoseps simatus Amphibians California
154. Kern Mallow Eremalche kernensis Plants California
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155. Kern Plateau Salamander Batrachoseps robustus Amphibians California
156. Kern Shoulderband Helminthoglypta callistoderma Snails California
157. Kings River Slender Salamander Batrachoseps regius Amphibians California
158. Kneeland Prairie Penny-cress Thlaspi californicum Plants California
159. La Graciosa Thistle Cirsium loncholepis Plants California
160. Laguna Mountains Skipper Pyrgus ruralis lagunae Insects California
161. Lake County Stonecrop Parvisedum leiocarpum Plants California
162. Lane Mountain Milk-vetch Astragalus jaegerianus Plants California
163. Lange's Metalmark Butterfly Apodemia mormo langei Insects California
164. Large-flowered Fiddleneck Amsinckia grandiflora Plants California
165. Laysan Albatross Phoebastria immutabilis Birds Alaska, Australia (Norfolk Island), California, Canada, Federated States of Micronesia, Hawaii, Japan, Marshall Islands, Mexico, New Zealand, Northern Mariana Islands, Oregon, Washington
166. Least Tern Sterna antillarum Birds Bahamas, Central America (winters), Greater and Lesser Antilles, Mexico, Northern South America, USA (California, including the Miss. R. Basin), Atlantic Gulf Coasts
167. Limestone Salamander Hydromantes brunus Amphibians California
168. Loch Lomond Coyote Thistle Eryngium constancei Plants California
169. Lompoc Grasshopper Trimerotropis occulens Insects California
170. Lompoc Yerba Santa Eriodictyon capitatum Plants California
171. Longfin Mako Isurus paucus Fishes Africa, Asia, Australia, Central America, Europe, North America (including United States and Hawaii), Oceanic, South America
172. Longhorn Fairy Shrimp Branchinecta longiantenna Crustaceans California
173. Lost River Sucker Deltistes luxatus Fishes California, Oregon
174. Lotis Blue Butterfly Lycaeides argyrognomon lotis Insects California
175. Lyon's Pentachaeta Pentachaeta lyonii Plants California
176. Mackenzie's Cave Amphipod Stygobromus mackenziei Crustaceans California
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177. Manica parasitica Manica parasitica Insects California
178. Many-flowered Navarretia Navarretia leucocephala ssp. plieantha Plants California
179. Marbled Murrelet Brachyramphus marmoratus Birds Canada, Mexico, United States
180. McDonald's Rock-cress Arabis mcdonaldiana Plants California
181. Melones Cave Harvestman Banksula melones Arachnids California
182. Menzies' Wallflower Erysimum menziesii Plants California
183. Merriam's Kangaroo Rat Dipodomys merriami Mammals Mexico, United States
184. Mesa Shoulderband Helminthoglypta coelata Snails California
185. Metcalf Canyon Jewelflower Streptanthus albidus ssp. albidus Plants California
186. Mexican Flannelbush Fremontodendron mexicanum Plants California, Mexico
187. Mexican Long-tongued Bat Choeronycteris mexicana Mammals Arizona, California, El Salvador, Guatemala, Honduras, Mexico, Nevada, New Mexico, Texas
188. Middlekauf's Shieldback Katydid Idiostatus middlekaufi Insects California
189. Modoc Sucker Catostomus microps Fishes California
190. Mohave Ground Squirrel Xerospermophilus mohavensis Mammals United States (California)
191. Mohave Tui Chub Gila bicolor mohavensis Fishes California
192. Monterey Clover Trifolium trichocalyx Plants California
193. Monterey Cypress Cupressus macrocarpa Plants California
194. Morro Bay Kangaroo Rat Dipodomys heermanni morroensis Mammals California
195. Morro Shoulderband Snail Helminthoglypta walkeriana Snails California
196. Mountain Yellow-legged Frog Rana muscosa Amphibians USA - Southern California DPS
197. Mt. Hermon June Beetle Polyphylla barbata Insects California
198. Munz's Onion Allium munzii Plants California
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199. Napa Bluegrass Poa napensis Plants California
200. Nelson's Antelope Squirrel Ammospermophilus nelsoni Mammals California
201. Nipomo Mesa Lupine Lupinus nipomensis Plants California
202. North Pacific Right Whale Balaena japonica Mammals Canada (British Columbia), China, Japan, Korea, Mexico (Baja California), Russia, Taiwan, United States and Hawaii
203. Northern Abalone Haliotis kamtschatkana Snails Alaska, California, Canada (British Columbia), Oregon, Washington
204. Northern California Black Walnut Juglans californica Plants California
205. Northern Fur Seal Callorhinus ursinus Mammals Arkansas, California, Canada, China, Japan, Korea, Mexico, Oregon, Russia, Taiwan, Washington
206. Northern Guitarfish Rhinobatos productus Fishes California, Mexico
207. Oceanic Whitetip Shark Carcharhinus longimanus Fishes Africa, American Samoa, Asia, Australia, Central America, Europe, Middle East, North America (including United States and Hawaii), Oceanic, South America
208. Ohlone Tiger Beetle Cicindela ohlone Insects California
209. Olive-sided Flycatcher Contopus cooperi Birds Central and South America, North America (including United States)
210. Orcutt's Spineflower Chorizanthe orcuttiana Plants California
211. Oregon Checker-mallow Sidalcea oregana Plants California
212. Otay Mesa-mint Pogogyne nudiuscula Plants California, Mexico (Baja California)
213. Owens Pupfish Cyprinodon radiosus Fishes California
214. Owens Tui Chub Gila bicolor snyderi Fishes California
215. Pacific Pocket Mouse Perognathus longimembris pacificus Mammals California
216. Pacific Pond Turtle Actinemys marmorata Reptiles California, Mexico, Oregon, Washington
217. Pacific Seahorse Hippocampus ingens Fishes Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Mexico, Panama, Peru, United States (California)
218. Palmate-bracted Bird's-beak Cordylanthus palmatus Plants California
219. Palos Verdes Blue Butterfly Glaucopsyche lygdamus palosverdesensis Insects California
220. Panamint Alligator Lizard Elgaria panamintina Reptiles California
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221. Pedate Checker-mallow Sidalcea pedata Plants California
222. Pennell's Bird's-beak Cordylanthus tenuis ssp. capillaris Plants California
223. Pine Hill Ceanothus Ceanothus roderickii Plants California
224. Pine Hill Flannelbush Fremontodendron californicum ssp. decumbens Plants California
225. Pinyon Jay Gymnorhinus cyanocephalus Birds United States
226. Pismo Clarkia Clarkia speciosa ssp. immaculata Plants California
227. Pitkin Marsh Lily Lilium pardalinum ssp. pitkinense Plants California
228. Plain Cactus Snail Xerarionta intercisa Snails California
229. Point Arena Mountain Beaver Aplodontia rufa nigra Mammals California
230. Port Conception Jerusalem Cricket Ammopelmatus muwu Insects California
231. Port Orford Cedar Chamaecyparis lawsoniana Plants California, Oregon
232. Presidio Clarkia Clarkia franciscana Plants California
233. Presidio Manzanita Arctostaphylos hookeri var. ravenii Plants California
234. Prickly Pear Opuntia treleasei Plants California
235. Prickly Pear Island Snail Micrarionta opuntia Snails California
236. Prickly Shark Echinorhinus cookei Fishes Australia, California, China, Hawaii, New Zealand, Palau, Peru, Taiwan
237. Quercus macdonaldii Quercus macdonaldii Plants California
238. Quercus engelmannii Quercus engelmannii Plants California, Mexico
239. Quercus dumosa Quercus dumosa Plants California, Mexico
240. Quercus tomentella Quercus tomentella Plants California, Mexico
241. Quino Checkerspot Butterfly Euphydryas editha quino Insects California, Mexico
242. Razorback Sucker Xyrauchen texanus Fishes Arizona, California, Colorado, Mexico, Nevada, New Mexico, Utah, Wyoming
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243. Red Tree Vole Arborimus longicaudus Mammals California, Oregon
244. Red-crowned Parrot Amazona viridigenalis Birds Mexico, Puerto Rico, US (TX, FL, CA)
245. Riparian Brush Rabbit Sylvilagus bachmani riparius Mammals California
246. Riparian Woodrat Neotoma fuscipes riparia Mammals California
247. Robust Spineflower Chorizanthe robusta Plants California
248. Rough Sculpin Cottus asperrimus Fishes California
249. Sacramento Anthicid Beetle Anthicus sacramento Insects United States
250. Sacramento Orcutt Grass Orcuttia viscida Plants California
251. Sacramento Splittail Pogonichthys macrolepidotus Fishes California
252. Salt Marsh Bird's-beak Cordylanthus maritimus ssp. maritimus Plants California, Mexico (Baja California)
253. Salt Marsh Harvest Mouse Reithrodontomys raviventris Mammals California
254. Sambar Deer Rusa unicolor Mammals Africa, Asia, Australia, Central America, North America (United States)
255. Samwell Cave Cricket Pristoceuthophilus sp. nov. Insects United States (California)
256. San Bernardino Bluegrass Poa atropurpurea Plants California
257. San Bernardino Mountains Bladderpod Lesquerella kingii ssp. bernardina Plants California
258. San Bruno Elfin Butterfly Callophrys mossii bayensis Insects California
259. San Clemente Island Broom Lotus dendroideus ssp. traskiae Plants California
260. San Clemente Island Bush-mallow Malacothamnus clementinus Plants California
261. San Clemente Island Indian Paintbrush Castilleja grisea Plants California
262. San Clemente Island Larkspur Delphinium variegatum ssp. kinkiense Plants California
263. San Clemente Island Woodland-star Lithophragma maximum Plants California
264. San Clemente Loggerhead Shrike Lanius ludovicianus mearnsi Birds California
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265. San Diego Ambrosia Ambrosia pumila Plants California, Mexico
266. San Diego Button-celery Eryngium aristulatum var. parishii Plants California
267. San Diego Fairy Shrimp Branchinecta sandiegonensis Crustaceans California
268. San Diego Mesa-mint Pogogyne abramsii Plants California
269. San Francisco Garter Snake Thamnophis sirtalis tetrataenia Reptiles California
270. San Francisco Lessingia Lessingia germanorum Plants California
271. San Jacinto Valley Crownscale Atriplex coronata var. notatior Plants California
272. San Joaquin Dune Beetle Coelus gracilis Insects California
273. San Joaquin Kit Fox Vulpes macrotis mutica Mammals California
274. San Joaquin Wooly-threads Monolopia congdonii Plants California
275. San Mateo Thornmint Acanthomintha obovata ssp. duttonii Plants California
276. San Mateo Woolly Sunflower Eriophyllum latilobum Plants California
277. Sandstone Night Lizard Xantusia gracilis Reptiles California
278. Sandwort Arenaria paludicola Plants California
279. Santa Ana River Woolly-star Eriastrum densifolium ssp. sanctorum Plants California
280. Santa Ana Sucker Catostomus santaanae Fishes California
281. Santa Barbara Island Liveforever Dudleya traskiae Plants California
282. Santa Catalina Island Manzanita Arctostaphylos catalinae Plants California
283. Santa Clara Valley Dudleya Dudleya setchellii Plants California
284. Santa Cruz Cypress Cupressus abramsiana Plants California
285. Santa Cruz Island Bush-mallow Malacothamnus fasciculatus var. nesioticus Plants California
286. Santa Cruz Island Fringepod Thysanocarpus conchuliferus Plants California
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287. Santa Cruz Island Malacothrix Malacothrix indecora Plants California
288. Santa Cruz Island Rock-cress Sibara filifolia Plants California
289. Santa Cruz Long-toed Salamander Ambystoma macrodactylum croceum Amphibians California
290. Santa Monica Mountains Grasshopper Trimerotropis occidentaloides Insects California
291. Santa Rosa Island Manzanita Arctostaphylos confertiflora Plants California
292. Santa Rosa Island Pine Pinus torreyana Plants California
293. Scottbar Salamander Plethodon asupak Amphibians California
294. Scotts Valley Polygonum Polygonum hickmanii Plants California
295. Sea Otter Enhydra lutris Mammals Canada, Japan, Mexico, Russia, United States
296. Sebastopol Meadowfoam Limnanthes vinculans Plants California
297. Shasta Crayfish Pacifastacus fortis Crustaceans California
298. Shasta Salamander Hydromantes shastae Amphibians California
299. Shortnose Sucker Chasmistes brevirostris Fishes California, Oregon
300. Showy Indian Clover Trifolium amoenum Plants California
301. Sierra Nevada Yellow-legged Frog Rana sierrae Amphibians California
302. Sierra Pygmy Grasshopper Tetrix sierrane Insects California
303. Siskiyou Mountains Salamander Plethodon stormi Amphibians California, Oregon
304. Slender-horned Spineflower Dodecahema leptoceras Plants California
305. Slender-petaled Mustard Thelypodium stenopetalum Plants California
306. Smith's Blue Butterfly Euphilotes enoptes smithi Insects California
307. Soft Bird's-Beak Cordylanthus mollis ssp. mollis Plants California
308. Soft-leaved Indian Paintbrush Castilleja mollis Plants California
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309. Solano Grass Tuctoria mucronata Plants California
310. Sonoma Alopecurus Alopecurus aequalis var. sonomensis Plants California
311. Sonoma Spineflower Chorizanthe valida Plants California
312. Sonoma Sunshine Blennosperma bakeri Plants California
313. Sooty Crayfish Pacifastacus nigrescens Crustaceans California
314. Sooty Shearwater Ardenna grisea Birds Africa, Antarctica, Asia, Australia, Central America, Europe, Middle East, North America (United States Territory), Oceanic, South America
315. Southwestern Willow Flycatcher Empidonax traillii extimus Birds Arizona, California, Colorado, Mexico, New Mexico, Texas, Utah
316. Spea hammondii Spea hammondii Amphibians California, Mexico
317. Speckled Black Salamander Aneides flavipunctatus Amphibians California, Oregon
318. Sphaerocarpos drewei Sphaerocarpos drewei Plants California
319. Spotted Owl Strix occidentalis Birds Arizona, California, Canada, Mexico, New Mexico, Texas
320. Stebbins' Morning-glory Calystegia stebbinsii Plants California
321. Steelhead Oncorhynchus mykiss Fishes (endangered population southern California Coast), North Pacific Ocean from the Kamchatka Peninsula in Asia to the northern Baja Peninsula
322. Steller Sea-lion  WATCH A LIVE STELLER SEA-LION Eumetopias jubatus Mammals Alaska, California, Canada, North Pacific Ocean, Oregon, Russia, Washington
323. Stephen's Kangaroo Rat Dipodomys stephensi Mammals California
324. Stephen's Kangaroo Rat Dipodomys cascus Mammals California
325. Streptocephalus woottoni Streptocephalus woottoni Crustaceans California
326. Suisun Thistle Cirsium hydrophilum var. hydrophilum Plants California
327. Tehachapi Slender Salamander Batrachoseps stebbinsi Amphibians California
328. Thousand Palms Desert Snail Eremarionta millepalmarum Snails California
329. Tiburon Jewelflower Streptanthus niger Plants California
330. Tiburon Paintbrush Castilleja affinis ssp. neglecta Plants California
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331. Tidewater Goby Eucyclogobius newberryi Fishes California
332. Tight Coin Ammonitella yatesii Snails California
333. Tricolored Blackbird Agelaius tricolor Birds Mexico, United States (California)
334. Trinity Bristle Snail Monadenia setosa Snails California
335. Triple-ribbed Milk-vetch Astragalus tricarinatus Plants California
336. Unarmored Threespine Stickleback Gasterosteus aculeatus williamsoni Fishes California
337. Ventura Marsh Milk-vetch Astragalus pycnostachyus var. lanosissimus Plants California
338. Vernal Pool Fairy Shrimp Branchinecta lynchi Crustaceans California, Oregon
339. Vernal Pool Tadpole Shrimp Lepidurus packardi Crustaceans California
340. Vine Hill Clarkia Clarkia imbricata Plants California
341. Wandering Salamander Aneides vagrans Amphibians California, Canada (British Columbia)
342. Wengeror's Cave Amphipod Stygobromus wengerorum Crustaceans California
343. Western Lily Lilium occidentale Plants California, Oregon
344. Western Toad Anaxyrus boreas Amphibians Canada, Mexico, United States (California)
345. Whale Shark  WATCH A LIVE WHALE SHARK Rhincodon typus Fishes Africa, American Samoa, Asia, Australia, Central America, Middle East, Oceanic, South America
346. White Abalone Haliotis sorenseni Snails North America (West Coast from Point Conception, CA, USA, to Punta Abreojos, Baja Californa, Mexico)
347. White Desert Snail Eremarionta immaculata Snails California
348. White-eared Pocket Mouse Perognathus alticolus Mammals California
349. White-rayed Pentachaeta Pentachaeta bellidiflora Plants California
350. Whitebark Pine Pinus albicaulis Plants Canada, United States
351. Willowy Monardella Monardella linoides ssp. viminea Plants California, Mexico
352. Woolly Meadowfoam Limnanthes floccosa Plants California
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353. Wreathed Cactus Snail Xerarionta redimita Snails California
354. Xantus's Murrelet Synthliboramphus hypoleucus Birds California, Canada, Mexico, Washington
355. Yadon's Piperia Piperia yadonii Plants California
356. Yellow Larkspur Delphinium luteum Plants California
357. Yosemite Toad Anaxyrus canorus Amphibians California
358. Yreka Phlox Phlox hirsuta Plants California
359. Zayante Band-winged Grasshopper Trimerotropis infantilis Insects California
360. Zerene Fritillary Speyeria zerene Insects California

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