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Orca whales, also known as killer whales, are apex predators and the largest members of the dolphin family. They inhabit all oceans, from the Arctic to Antarctic regions, but are most commonly found in cold, coastal waters. Orca whales exhibit complex social structures and have been observed engaging in behaviors such as hunting cooperatively and communicating using a diverse range of vocalizations. Adult orcas can reach lengths of up to 30 feet and weigh up to six tons. They have distinctive black-and-white coloration, with a prominent white patch behind the dorsal fin and a white underside. Orca whales feed on a variety of prey items, including fish, seals, sea lions, and even large whales. Their intelligence and adaptability have made them popular subjects of study in the fields of marine biology and conservation.