Another large Great White has been reported.
Fishermen 5 to 10 kilometres off Tasmania's North coast near Tenth Island describe the shark as 3.4 to 4 metres.
Police have issued a community alert.
It follows 10 year old Latrobe boy Lucas Arnott being pulled from a boat by a Great White of similar length off Stanley on July 17th.
The species and size in that encounter was concluded by the CSIRO examining the bite torn life jacket Lucas was wearing.
His dad jumping in the water scared the shark away, Lucas was left with head, arm and chest injuries