Whales are the biggest creatures on Earth. These animals are found in every ocean, but that doesn't make them fish.

Decompression sickness can occur when a mammal swims to the ocean's surface too quickly, and the change in pressure produces lethal nitrogen gas bubbles that clog its blood vessels. As deep divers ...

The waters around the U.S. are home to threatened species who need conservation policies to save them from extinction. They ...

Sea Otters: Effects of ocean acidification will be felt up the food chain. Marine mammals like sea otters that rely on shellfish may be in trouble. Studies show that, if left unchecked, within our ...

Animal species around the world are being hit on ... Here are the 15 extinct ocean animals (that we know of), along with a dozen others that are on the verge of extinction.

WASHINGTON— The Center for Biological Diversity will head to Capitol Hill on Wednesday, June 8 to distribute Endangered Species Condoms in honor of World Ocean Day and mark the 50th anniversary of the ...