Whales, the ocean's largest creatures, were once land-dwelling animals that walked on four legs. Around 50 million years ago, their ancestors roamed the shores, evolving into the marine giants we know ...

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

The evolution of modern cetaceans (including whales, dolphins, and porpoises) from terrestrial ancestors required many drastic anatomical, physiological, and behavioral changes. The development of an ...

A mysterious whale that has puzzled scientists for decades may not be an anomaly, but a clue to what climate change is doing ...

In the process he has shown that whales, once celebrated by creationists as the best evidence against evolution, may be evolution's most elegant proof. "Complete specimens like that Basilosaurus ...

For several years now, Coombs has been studying whale skull peculiarities—such as the structure’s unusual asymmetry in some species—and their implications for cetacean evolution. She first started ...

Follow their extraordinary journey from shore to sea. Although whales are expert swimmers and perfectly adapted to life underwater, these marine mammals once walked on four legs. Their land-dwelling ...

are all-but acoustically invisible to killer whales,” the study concluded. The findings suggest the evolution and behavior of at least some baleen whales has been significantly shaped by fear of orca ...

Whales, the ocean's largest creatures ... Pakicetus' descendants continued to adapt, leading to the evolution of Ambulocetus, which lived between 50 and 48 million years ago.