Orcas, also known as killer whales, are found in every ocean. Males can reach up to 23 feet and 10 tons, while females grow to 21 feet and 8 tons. Orcas live in family groups called pods and are apex predators that eat seals, penguins, and fish depending on their location. While orcas are only hunted by humans, some are still held in captivity for amusement parks, though live shows have been phased out since concerns over their treatment arose.