Great white sharks are responsible for the largest number of reported and identified unprovoked shark attacks on sail boats.
== Threats to sharks ===== Fishery ===In 2008, it was estimated that nearly 100 million sharks were being killed by people every year, due to commercial and recreational fishing
 No sharks have been observed on almost 20% of the surveyed reefs and shark depletion was strongly associated with both socio-economic conditions and conservation measures

