web analytics

Why whales grew to such monster sizes

A new study in Science Magazine explains the evolutionary forces behind the ocean’s behemoths. It offers an explanation of why some whales became the world’s biggest animals.

“They found that the baleen whales’ growth spurt coincided with the beginning of the first ice ages. As glaciers expanded, spring and summer runoff poured nutrients into the coastal ocean, fueling explosive growth in krill and small animals the whales consumed”