Sharks are considered to be at the top of the oceanic food chain. While most sharks prey on fish and smaller mammals that are lower on the food chain, they will occasionally prey upon each other. Sharks are not the only ocean animal that eats sharks; orca whales have been found banding together to hunt and eat sharks.
Orcas are wildly intelligent animals and orchestrate the hunt together. When a shark is flipped upside-down, they are completely immobile making them unable to swim away or fight back. When the orcas are able to immobilize a shark, it is then able to eat the shark.
