Vaquitas (Phocoena sinus) are record-holders among all cetaceans. Thus, these animals are the smallest cetaceans, meanwhile being the smallest porpoises; they have the smallest range; and finally, vaquitas are the most critically endangered cetacean...
The Green sea turtle (Chelonia mydas) is a species of large sea turtle of the family Cheloniidae. The common name of this species refers to the usually green fat found beneath its carapace, not to the color of its carapace, which is olive to black....
The North Pacific right whale (Eubalaena japonica ) is a very large, thickset baleen whale species that is extremely rare and endangered. The Northeast Pacific population, which summers in the southeastern Bering Sea and Gulf of Alaska, may have no...
The Santa Catalina rattlesnake (Crotalus catalinensis ) is a species of venomous pit viper endemic to Isla Santa Catalina in the Gulf of California just off the east coast of the state of Baja California Sur, Mexico. No subspecies are currently...
The California least tern, Sternula antillarum browni, is a subspecies of least tern that breeds primarily in bays of the Pacific Ocean within a very limited range of Southern California, in San Francisco Bay and in northern regions of Mexico. This...
Mearns's squirrel (Tamiasciurus douglasii mearnsi ) is a subspecies of the Douglas squirrel endemic to Mexico. It is endangered and occurs in low densities, and is threatened by habitat loss. It is possibly also threatened by competition from the...
Oryzomys peninsulae, also known as the Lower California rice rat, is a species of rodent from western Mexico. Restricted to the southern tip of the Baja California peninsula, it is a member of the genus Oryzomys of family Cricetidae. Only about...
Bombus pensylvanicus, the American bumblebee, is a threatened species of bumblebee native to North America. It occurs in eastern Canada, throughout much of the Eastern United States, and much of Mexico.Once the most prevalent bumblebee in the...
The San Esteban chuckwalla (Sauromalus varius ), also known as the piebald chuckwalla or pinto chuckwalla, is a species of chuckwalla belonging to the family Iguanidae endemic to San Esteban Island in the Gulf of California. It is the largest of the...
Haliotis cracherodii, the black abalone, is a species of large edible sea snail, a marine gastropod mollusk in the family Haliotidae, the abalones.This species is relatively small compared with most of the other abalone species from the eastern...
The Angel Island chuckwalla (Sauromalus hispidus ), also known as the spiny chuckwalla, is a species of chuckwalla lizard belonging to the family Iguanidae endemic to Isla Ángel de la Guarda (Guardian Angel Island) in the Gulf of California. The...
The San José brush rabbit (Sylvilagus bachmani mansuetus ) is a critically endangered subspecies of the brush rabbit, in the family Leporidae.
The silky shark (Carcharhinus falciformis), also known by numerous names such as blackspot shark, gray whaler shark, olive shark, ridgeback shark, sickle shark, sickle-shaped shark and sickle silk shark, is a species of requiem shark, in the family...
The giant sea bass (Stereolepis gigas) is a fish native to the North Pacific Ocean. Although commonly referred to as a giant sea bass, black sea bass or giant black sea bass, it is actually a wreckfish in the family Polyprionidae rather than in the...
The Baja California rock squirrel (Otospermophilus atricapillus ) is a species of rodent in the family Sciuridae. It is endemic to Baja California, Mexico.
The desert pupfish (Cyprinodon macularius) is a rare species of bony fish in the family Cyprinodontidae. It is a small fish, typically less than 7.62 cm (3 in) in length. Males are generally larger than females, and have bright-blue coloration,...
The California sheephead (Semicossyphus pulcher) is a species of wrasse native to the eastern Pacific Ocean. Its range is from Monterey Bay, California, to the Gulf of California, Mexico. It can live for up to 20 years in favorable conditions and...
Dickey's deer mouse (Peromyscus dickeyi ) is a species of rodent in the family Cricetidae. It is endemic to Mexico, being found only on a small island in the Gulf of California. The species is named for Donald Dickey, who sponsored the expedition...
Burt's deer mouse (Peromyscus caniceps ) is a species of rodent in the family Cricetidae. It is endemic to Mexico, where it is found only on Montserrat Island off the east coast of Baja California Sur. The species is threatened by predation by feral...
The silvertip shark (Carcharhinus albimarginatus) is a large species of requiem shark, in the family Carcharhinidae, with a fragmented distribution throughout the tropical Indian and Pacific Oceans. It is often encountered around offshore islands...
The Margarita Island kangaroo rat (Dipodomys merriami margaritae ) is a subspecies of rodent in the family Heteromyidae.It is endemic to Mexico, where it is found only on Isla Santa Margarita of Magdalena Bay, Baja California Sur. The natural...
The San José Island kangaroo rat (Dipodomys merriami insularis ) is a subspecies of rodent in the family Heteromyidae. It is endemic to Mexico, where it is found only on San José Island off the east coast of Baja California Sur. (Dipodomys merriami...
Dalquest's pocket mouse (Chaetodipus dalquesti ) is a species of rodent in the family Heteromyidae, sometimes viewed as a subspecies of Chaetodipus ammophilus. It is endemic to Mexico. The pocket mouse is named after Walter W. Dalquest (1917-2000),...
The green sturgeon (Acipenser medirostris) is a species of sturgeon native to the northern Pacific Ocean, from China and Russia to Canada and the United States.
The Pacific seahorse, also known as the giant seahorse, (Hippocampus ingens) is a species of fish in the family Syngnathidae. Their genus name (Hippocampus) is derived from the Greek word hippos, which means "horse" and campus, which means "sea...
