Baleen this issue. A whale's baleen plates play the most important role in its filter-feeding process. To feed, a baleen whale opens its mouth widely and scoops in dense shoals of prey (such as krill, copepods, small fish, and sometimes birds that happen to be near the shoals), together with large volumes of water. It then partly shuts its mouth and presses its tongue against its upper jaw, forcing the water to pass out sideways through the baleen, thus sieving out the prey, which it then swallows. People formerly used baleen (usually referred to as "whalebone") for making numerous items where
Captive killer whales of captive killer whales belong to the AMMPA, but exhibitors in other countries do not. The tanks in most marine parks are considerably larger than the minimum sizes required by regulations. However, the Miami Seaquarium has been criticized for the small size of the tank holding their sole killer whale, Lolita, which is less than two of her body lengths wide at any point. Building a new tank would be costly and there is little prospect of replacing the aging Lolita. On average, an adult killer whale in the wild may eat about three to four percent of their body