Blue whales don't have teeth, they have baleen, which is located in their upper jaw and which they use as a filter. They swim up from beneath, open their mouths and catch a mouthful of prey animals —and everything else in the water— then press their tongues to their palates to squeeze the water out. read more
There are two kinds whales, toothed (like porpoises, dolphins, orca, and sperm whales) and non - toothed or baleen whales that take huge gulps of water and filter the nutrients through their baleen en plates, keeping the small krill inside and swallowing them. read more
Asha de Vos explains why the size of krill make them the ideal food for the blue whale -- it's as if the blue whale was made to eat krill (and krill was made to be eaten by the blue whale). read more
Instead of having to spend energy hunting a single prey item like a fish or seal, energy that could be wasted if it escapes, the baleen whales simply glide through dense clouds of krill like aquatic combine harvesters, swallowing up to 457,000 calories in one gulp. read more