Sharks feed on a variety of marine animals, including fish, squid, seals, sea lions, and sea turtles. Some shark species are also known to attack humans, although these attacks are relatively rare.
The position of sharks in the food web varies depending on the species. Some sharks, such as the great white shark, are generalist predators that feed on a wide variety of prey. Other sharks, such as the whale shark, are specialist predators that feed on a specific type of prey.
Sharks are important predators in marine ecosystems because they help to control the populations of their prey species. This in turn helps to maintain the balance of the ecosystem and ensures that there is enough food for all species.