The trees were transported here by boat and metal canoe — or simply strapped atop an impromptu raft of other, more buoyant logs.

When diving, they wear hand-carved wooden goggles with glass lenses, hunting with spear guns fashioned from boat timber, tyre rubber and scrap metal.

The boys procured some twine and borrowed a lure from their unsuspecting father, a three-inch metal spoon which they attached upside down and then threw into the water a few yards behind their boat.