Whale ancestors were terrestrial mammals that walked on four legs. This bone structure that helped them walk eventually ...

WELLINGTON, New Zealand (AP) — Long before whales were majestic, gentle giants, some of their prehistoric ancestors were tiny, weird and feral. A chance discovery of a 25 million-year-old fossil on an ...

The creatures, which ranged in size from that of a fox to more than 50 feet long, divided their time between the coast and the water Riley Black - Science Correspondent The first whales were ...

Scientists have finally solved a decades-old mystery with the first-ever live encounter of a ginkgo-toothed beaked whale.

The mammals' mysterious clicks contain a stunning level of complexity, a new study shows. A group of sperm whales (Physeter macrocephalus) swims together in the Indian Ocean. For years, researchers ...