Monster bull sharks lurk in the shallow waters off Africa's coast, while vicious tigerfish swim in the remote, murky rivers of the interior.

Four people have now been bitten by sharks in the last two days in New South Wales, including three in Sydney Harbor. Two people are in critical condition. Subscribe to our newsletter for the latest ...

Due to their shallow coastal habitat and aggressive behavior, they are considered among the most dangerous sharks.

Amid the heavy rainfall and wild flash flooding smashing Sydney in the past 24 hours, experts warned it could be the perfect conditions for bull shark attacks.

People are being urged to exercise caution when going for a dip following a recent spate of shark attacks, as rainy weather ...