How does a blue whale feed?
A blue whale filters small shrimp-like creatures called krill from the water. Hanging from the whales upper jaw are lots of plates of a fringed bristly material called baleen. The whale opens its mouth and water, and krill, flows in. The whale forces the water through the baleen with its tongue. The water flows out at the sides of the mouth, leaving the krill behind on the baleen for the whale to swallow.
