Diving is risky business. Just how risky depends on a whole shopping list of factors and influences, but let’s agree that there are more risks involved with diving than, say, sitting in your basement watching Olympic curling on TV.

As picture perfect as Malapascua is, in a nation of 7,107 palm tree fringed islands, 2.5km long Malapascua wouldn’t be on anyone’s radar were it not for the thresher sharks that treat the island like a spa. Each morning as the sun peeks over the mountains on distant Cebu, Pelagic threshers rise from the depths to be cleaned by reef fish along a deep ledge known as Monad Shoal.

The fox shark, also called the common thresher shark, lives usually at depths of over 200 meters and it is sighted only rarely. This is the main reason, we don’t know very much about these animals, and there is very little good visual documentation showing thresher sharks up close on camera.