Fossils of Ancient Giant Whale Perucetus Colossus Found in Peru, Potentially the Heaviest Animal Ever

The whale lived approximately 39 million years ago in shallow coastal waters off Peru.
Its fossilized bones suggest it weighed between 94 and 375 metric tons, heavier than the blue whale.
Perucetus had unusually dense bones and a bulky body adapted for coastal living.
The discovery challenges assumptions about when and how gigantism evolved in whales.
Its feeding behavior and lifestyle remain uncertain, with theories of sea grass grazing or scavenging.