The apparently contradictory choice of adding teleconverters to fish-eye lenses to obtain arresting “wide-macro” images has long been adopted by many rainforest and insect specialists—notably Frans Lanting, the grand master of them all—while several Japanese authors have pioneered its use in underwater photography since the last decade.

The world’s full of triangles. There’s the Love Triangle, the Golden Triangle, the Bermuda Triangle… and then of course, most relevant of all to us divers, there’s the Macrolife Triangle, that blissful figure made up by the Malaysian islands of Lankayan and Kapalai and—at the northern tip of the Indonesian island of Sulawesi—the Strait of Lembeh.