A hippopotamus-like creature swims underwater

Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows

An artist's rendition of the Paleoparadoxia tabatai, a desmostylian from the Miocene Credit: Nobu Tamura In the seagrass beds and kelp forests of the Oligocene-Miocene transition, nearly 32.5 to 10.5 million years ago, a...

Efforts to Protect the Critically Endangered Monk Seal

Monk seals -- the only completely tropical species of seal in the world -- are in trouble. Centuries of human exploitation and habitat destruction have caused the remaining populations of Mediterranean monk seals (...