What is Baleen?
Baleen is actually a whale bone. Some whales are actually baleen whales and are categorized that way. Whales use baleen to suck in things like krill and other small sea animals. Baleen acts like a big filter that the baleen whales use to get rid of the sand that they get from trying to get small animals and then they filter out the sand and then they eat the animals that are left.