orca wiki:
>For other uses, see Orca (disambiguation). The Orca (Orcinus orca), also known as the Killer Whale or Grampus, is the largest member of the oceanic dolphin family. It is the second-most widely distributed mammal on Earth (after humans) and is found in all the world's oceans. It is also a versatile predator, eating fish, turtles, birds, seals, sharks and even other juvenile and small cetaceans. This puts the Orca at the pinnacle of the marine food chain. The orca also attacks other whales, in particular Gray Whales.
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