Killer whale! it sounds pretty dangerous, right? when you look in its mouth you can see why it is so dangerous. The killer whale or Orca is a predator. It eats fish, squid, sea Lions, dolphins, seals and even other whales. It hunts and jumps for seals even on the beach. The baby whales are called calves and they grow up in the womb. They can swim immediately after birth. They are nursed by their mother until they can eat solid food.