In Sydney, Australia hungry sharks are venturing up Australian rivers as drought reduces fresh water levels, forcing schools to warn children not to cool off in the local rivers.
Australia is in the trips of one of its worst droughts in 100 years. Fresh water levels in rivers have fallen and slat water is extending further inland, with declining stocks of river and estuary fish forcing sharks further upstream.
In Wingham, which is about 40km upstream on the Manning River, a local fisherman spotted a bull shark in a small dam nearby – a popular swimming hole for locals. The bull shark, which can measure up to four metres in length and weighs about 230kg, can survive in fresh water and saltwater and will eat almost anything.
Bull sharks have been blamed for several attacks on canoeists and kayakers on the upper reaches of Sydney harbour in recent years.