Though some may think large sharks are the most fearsome animals in the ocean, even predators such as the great white exist below one animal on the food chain; the killer whale. Also known as orcas, killer whales are the largest of all dolphins and are true apex predators, even hunting great white sharks on occasion.
There are a variety of different types of orcas living in every ocean in the world, though there are slight differences in appearance, feeding and social habits depending upon habitat. Some are residents of the same area year-round and form strong family bonds, whereas other types are transient and move from place to place. Most live and travel in groups of anywhere from 2 to 75 depending on type.