Orca

Great White sharks, attracted by an offshore seal colony, have brought success to the adjacent fishing village of Gansbaai along the southern African coast. A flourishing shark cage diving industry has sprung up, bringing jobs and money, and so benefiting almost the entire community. Tourists come from far and near to experience the thrill of a real-life brush with the legendary 'Jaws'. Shark Town, as it has become known, is booming. Then one day, the sharks disappear. Slowly at first, but with gathering momentum, the word spreads: cage diving off Gansbaai can no longer promise the thrill of an encounter. The crowds thin, the boats remain at their moorings, and the once bustling community waits as their livelihoods tail off. Entrepreneurs and scientists alike are baffled.

But it's not long before shark carcasses start washing up on the beaches. These, together with some coincidental sightings of another apex predator in the vicinity, are the first leads to the possible causes and culprits. Against the clamour and thrill of the cage-diving season in full swing, Richard Peirce visits the unfolding drama and explores what's behind these strange events.