A biologist explains the surprising evolutionary math behind how the blue whale became the largest animal that has ever lived ...

An illustration of German-born fossil collector Albert Koch's "Hydrarchos" as it appeared on display. From Fowler, O.S. 1846. The American Phrenological Journal and Miscellany, Vol. 8. New York: ...

Even as humpbacks rebound in number, their genomes reveal a loss of genetic diversity and a buildup of harmful mutations left ...

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 story of whales did not begin in the seas. For millions of years before beasts like the sinuous Basilosaurus lived full time in the ocean, the shorelines and estuaries of prehistoric Earth were ...

Rare tusked whales have been identified and photographed alive at sea for the first time following a herculean research effort off the shores of Mexico, a new study finds. The newly-sighted cetaceans ...

A six-year study off California’s coast shows how marine heat waves and noise pollution are silencing the ocean’s largest singers. Does saving the ocean start with hearing it? A blue whale swims near ...

Sherry Cox does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

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 ...

Researchers have identified ginkgo-toothed beaked whales alive at sea for the first time after years of searching, and in doing so solved the mystery of an odd echolocation pulse in the North Pacific.