It has been said that the Orca whale once had legs which were useless and were changed to fins. Scientists are not shore though. The Orca eats fish, squid, penguins, sea lions, and the Orca is the only whale that eats other whales. The Orca Whale sucks fish from fishermen's lines. Orcas hunts in pods.
Orcas find food by echolocation .
Orcas tend to toss there victims around as play before eating them. The Orca is the only whale that attacks and kills animals on shore. The Orca has been seen with just seal tongue, brain, intestine, walrus insides and other animals insides. The Orca had no predators until people had guns.