Apex predator
A hunter at the top of its food chain with few or no natural enemies as an adult, such as the great white shark.
Also: top predator
Apex predators eat other animals and are rarely eaten themselves once grown. In the sea they include large sharks such as the great white and tiger shark, and big tunas, marlin and swordfish. In rivers, the goonch catfish of Himalayan rivers, the arapaima of the Amazon and the Nile perch fill that place. Removing top predators can upset a whole food web: when large sharks are fished out, the animals they ate can boom and their own prey fall. Because they sit high in the food chain, they also gather the most mercury.