Four people have now been bitten by sharks in the last two days in New South Wales, including three in Sydney Harbour. Two people are in critical condition.
The shark species responsible isn’t yet known. But some of these incidents likely involved the highly adaptable bull shark (Carcharhinus leucas). This unique fish species can tolerate a wide range of water salinity, from oceans to brackish estuaries, and even freshwater rivers.
Bull sharks have long been found in warmer Australian waters, ranging from south-west Western Australia, all the way around the Top End and down the east coast as far as the New South Wales-Victorian border.
