It was a scene straight from the ancient fable as Matt Heath swam up to a tiger shark – and spotted a fisherman’s hook sticking out of its mouth. Androcles famously braved the lion’s roars to pull a giant thorn from its paw. But would one of the most dangerous predators known to man respond as tamely as Aesop’s injured beast? After swimming with the sharks and gaining their trust, the dive boat captain knew he had to help. ‘Believe me, there is nothing relaxing about pulling a large hook out of a 14ft tiger shark,’ said the 29-year-old American....