What is a "killer whale"?

The killer whale, also known as the orca, is a large and powerful marine mammal characterized by its distinctive black and white coloration, sharp dorsal fin, and impressive hunting skills, known for its social behavior, intelligence, and adaptability, found in oceans worldwide and known for its apex predator status, often hunting in groups, or pods, and feeding on a variety of prey including fish, squid, and marine mammals.