When Did Whales Get So Large?

baleen – n. cartilage that filters food and water from the mouths of large whales

cartilage – n. a strong but flexible material found in some parts of the body (such as the nose, the outer ear, and some joints)

filter – n. a device that is used to remove something unwanted from a liquid or gas that passes through it

algae – n. simple plants that have no leaves or stems and that grow in or near water

minivan – n. a small van designed to carry people and families