Many people are scared witless by sharks, but I love them. I scuba dive and freedive with them whenever I can.

First described in 1837 by the German naturalist  Eduard Rüppell, the great hammerhead shark (Sphyrna mokarran) is the largest of the hammerhead shark family and can reach a length of over 6m (20ft), although some specimens have been seen to be much larger than this. However, with overfishing, the great hammerhead is usually observed to be much smaller than this.