The Ancient Ancestors of Blue Whales Hunted the Oceans With Surprisingly Sharp Teeth
Modern filter-feeding baleen whales use comb-like structures in their mouths to scoop up large volumes of itsy-bitsy animals and microorganisms. But as new research reveals, their ancestors were remarkably different, featuring sharp teeth that they used to attack prey. Baleen whales, a group that includes humpback and blue whales, are the largest animals on Earth,…
