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 ...