Some whales, like orcas, have a falcate-shaped dorsal fin. In classification, a family is a group of related or similar organisms. A group of similar families forms an order. FAST ICE Fast ice is ice that is attached to the shore, usually found in polar seas.
Baleen whales are filter feeders, obtaining krill by sieving water through their baleen.
FIN A fin is a part of aquatic animals that helps them swim, steer, and balance in the water. Many whales have dorsal fins. Fin whales have a flattened, V-shaped head, and are black to gray with a white belly and lower jaw. FISH Fish are scaly, cold-blooded animals with fins that get their oxygen from the water using gills. Whales and other cetaceans have flippers.