Killer whales are mammals. They have two common names: killer whale and ocra. Killer whales inhabit most of the world's oceans, ranging from warm waters to freezing cold waters (Monterey Aquarium). Not all killer whales are known because there are so many of them. Orcas are very social and travel in groups. Whales usually stay with the same pods of whales during their journey. Ocras generally migrate with their food and also carry out seasonal migrations. (Marine world). The food they eat is fish, sea lions, squid, penguins, sea turtles, sea birds, seals, baleen whales, other toothed whales {dolphins}, walruses, sea ​​otters, sharks, they can also eat humans, polar bears, reptiles, moose and other killer whales [which have died] (Sea World) (National Geographic). They are carnivores (National Geographic). Killer whales do not chew their food, they swallow it whole or tear off pieces of it. Ocras hunt in groups and to confuse their prey, they gather them at the top of the surface and then attack. They can also jump on land to collect their food. Killer whales have cone-shaped teeth that are three...