Triangular fins slicing the water circling ominously, a view past fangs into a monster’s stomach — say ‘great white sharks’ to anyone of a certain age and the instant reaction is ‘Jaws’, even though Stephen Spielberg has been apologising for what he did to the reputation of the Great White time and time again. For the record, one is more likely to be hit on the head by a coconut than eaten by a shark, but most people believe otherwise.