Noun
whale with plates of whalebone along the upper jaw for filtering plankton from the water
Source: WordNetEschrichtiidae or the gray whales is a family of baleen whale (suborder Mysticeti ) with a single extant species, the gray whale (Eschrichtius robustus). Source: Internet
Gigi was the first captive baleen whale. Source: Internet
Keep in mind that there are still some grey areas of conflict, such as the case with relationship of the pecoran families and the baleen whale families. Source: Internet