Here's why:
* Family: Killer whales (Orcinus orca) belong to the oceanic dolphin family (Delphinidae).
* Physical characteristics: They share many physical characteristics with other dolphins, including a streamlined body, a dorsal fin, and a blowhole.
* Social behavior: Killer whales are highly social animals, living in complex pods with intricate communication systems, which is typical of dolphins.
* Diet: Although they are apex predators, killer whales are primarily carnivores and feed on fish, squid, and other marine mammals, similar to many dolphin species.
While sharks and dolphins are both marine animals, they belong to different orders and have distinct evolutionary paths.