Bull Sharks: Facts, Habitat & More

Cartoon bull shark standing with his bull father and shark mother on a city sidewalk. — *_{The bull shark, one of the few sharks able to survive in freshwater.}*

Meet the Bull Shark

The bull shark is famous for a trait almost no other shark shares: the ability to survive and even thrive in freshwater. Stocky, aggressive, and highly adaptable, bull sharks have been documented swimming hundreds of miles up rivers, far from any ocean, making them one of the most unpredictable sharks in terms of where they might turn up.

Habitat

Bull sharks live in warm, shallow coastal waters worldwide, but their standout trait is a specialized physiology that lets them tolerate freshwater for extended periods. They’ve been found far up major rivers, including the Mississippi, the Amazon, and the Zambezi, sometimes thousands of miles from the sea.

Diet & Hunting

Bull sharks are opportunistic predators, feeding on fish, other sharks, rays, and even land animals unlucky enough to end up in the water. Their stocky, powerful build and aggressive hunting style make them one of the more formidable coastal predators.

Reproduction

Bull sharks give birth to live young, often using river mouths and estuaries as nursery areas where young pups can grow in relative safety from ocean predators before moving to saltwater.

Lifespan

Bull sharks typically live 16 to 25 years in the wild.

Interesting Facts

Bull sharks have one of the highest bite forces relative to body size of any shark species.
Because they tolerate both salt and freshwater, bull sharks are one of the only sharks that pose even a small risk to swimmers well upstream of the ocean.
Their stocky build and unpredictable, sometimes territorial behavior contribute to their reputation as one of the more dangerous shark species to humans.

Frequently Asked Questions

Can bull sharks really live in freshwater?
Yes. Bull sharks have specialized kidneys and glands that let them regulate salt levels in their body, allowing extended freshwater survival that most sharks can’t tolerate.

Are bull sharks dangerous to humans?
They’re considered one of the more dangerous shark species due to their aggressive tendencies, unpredictable habitat range, and presence in shallow water where people swim.