When we think about sharks, most of us instantly think of the ocean. However, there are some shark species that live in freshwater environments. Some sharks spend their entire lives in freshwater, ...

Bull sharks possess one of the most extreme biological adaptations in the animal kingdom, allowing them to survive in both saltwater and freshwater environments that would kill most marine predators .

A new pattern in shark behavior has experts sounding the alarm, and it may have everything to do with an overheating planet. Bull sharks are known to be able to swim between saltwater and freshwater, ...

Researchers supported by FAPESP recorded lemon sharks (Negaprion brevirostris) preying on an invasive species, the jaguar cichlid (Parachromis managuensis), for the first time. This observation was ...

Scientists may have been getting shark ages wrong. A new study uses chemical signals in bones to track age more accurately.

Juvenile bull sharks are not all feeding or behaving the same way, even within the same nursery. These individual differences ...