Gentle and playful marine mammals, Florida manatees have come to represent the amazing biodiversity of Florida. With their large size, slow-moving nature, and fondness of seagrass, it's easy to see ...

Hellbenders may not be pretty to everyone, but these strictly aquatic salamanders are as interesting as their awesome name implies — and they grow up to 2 feet long and sometimes top 4 pounds, making ...

• Secured a seafood import ban to pressure Mexico to save critically endangered vaquita porpoises, with only around 10 individuals remaining. • Sought protection for leopards, giraffes, pangolins, ...

Can you think of a more destructive way to extract resources than blowing up a mountain? How about if the waste from doing it is dumped straight into mountain streams? Mountaintop removal is a radical ...

With sumptuous, fleshy lips and a bulbous, protruding forehead, the humphead wrasse is an unforgettable fish. This enormous, colorful coral-reef dweller is slow to reproduce, making it vulnerable to ...

Each colored area on this map represents a different country's mining claim in the Clario-Clipperton zone. Map courtesy International Seabed Authority.

One of the first imperiled animals the Center championed, the southwestern willow flycatcher has suffered more than a century of steady decline. Livestock grazing, dams, water withdrawal, and sprawl ...

DESCRIPTION: The eastern diamondback is the largest rattlesnake in the world. Adults are typically four to five feet long and weigh four to five pounds. A big snake may reach six feet in length and ...

With adults only about an inch tall, the dwarf seahorse is the smallest of the four seahorse species found in U.S. waters. This dainty, curly-tailed fish occurs only in shallow seagrass areas in the ...

A slumbering Arctic fox in winter will wrap its long, bushy tail around its body for added warmth. Its feet are covered in dense fur to insulate against the cold and provide traction on the ice.

Desert tortoises have lived in the deserts of California, Arizona, Nevada and Utah since the Pleistocene. In the early years of the 20th century, they still thrived within the Southwest's arid ...

For every county in the United States, the map below shows information on all the animals and plants protected under the U.S. Endangered Species Act as threatened or endangered. To see the number of ...