The chances of aquatic mammals — like orcas, dolphins and whales — ever evolving to live on land again are almost nonexistent, a new study has found. Researchers discovered that the adaptations that ...

While basically all frogs are semi-aquatic to some degree, some species spend nearly all of their lives underwater! Though they are quite rare, there are several notable varieties of nearly fully ...

The chances of aquatic mammals — like orcas, dolphins and whales — ever evolving to live on land again are almost nonexistent, a new study has found. Researchers discovered that the adaptations that ...

Egyptian paleontologists found a new, extinct whale species, about the size of a bottlenose dolphin. It is the smallest known whale of the extinct Basilosauridae family, says the scientists' new study ...

In most narratives, the story of evolution is the story of organisms emerging from the ocean and eventually populating the land. But for some species that evolution also involved a return trip. Dozens ...

On the tail of the discovery of a whale fossil that is the largest animal on record, researchers in Egypt announced the unearthing of one of the smallest early whales known to science. The find is ...

Roughly 250 million years ago, mammals that once roamed on land began slipping back into the sea. The descendants of those pioneering animals include today’s dolphins and orcas—highly adapted marine ...

Scientists have discovered that once a mammal has become fully aquatic, it passes a threshold that makes a return to terrestrial landscapes almost impossible. When you purchase through links on our ...