Found on the southern coast of Peru, this amphibious creature had a tail and hooves and was the oldest preserved fossil of ...

One of the first cetaceans, Pakicetus, was a goat-sized creature that lived along the banks of lakes and rivers in ...

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the ...

A whale carcass washed up on Pismo State Beach last week — and the cause of death is still unknown, according to the Marine Mammal Center. California State Parks rangers found the adult pygmy ...

Seabirds transport nitrogen and phosphorus from the ocean to the land in their poop, increasing the density of plants on islands. Animals form the circulatory system of the planet—and whales are ...