Baleen is a flexible, keratin-based filtering system that allows whales to feed on massive amounts of tiny prey efficiently. Different baleen shapes and sizes reflect different feeding strategies, ...

Alfred the aetiocetid had teeth but needed a better way to capture his tiny prey. Credit: Carl Buell Baleen whales, such as the gigantic 30m-long blue whale, are the largest animals that have ever ...

Whales are mighty. Blue whales, for example, aren’t only the largest animal on Earth, but as far as we know, they’re the largest animal that’s ever existed on Earth—and that includes dinosaurs.