Fixing my mask tight to my face, I tumble backwards into the warm Dampier Strait, into the greatest coral system on Earth. The underwater gardens blaze with living colours and form: purple, golden-wheat and green, teased into the shapes of brains, antlers, rose-gypsum crystals and delicate fans. Darting around them are vast shoals of fish: silvery battalions of grey drummers, striped sergeant fish, orange clownfish wriggling through anemones and syringe-profiled pipefish. Thousands of blue-and-yellow fusiliers appear like a technicolour screensaver. On one snorkel, I encounter six hawksbill turtles, more than I’d ever seen during years of subaquatic exploring.
What makes Raja Ampat so biologically diverse is its geographical soup of fast-flowing nutrient-packed currents, sea temperatures above 28ºC, and an archipelago of 1,411 coral-limestone islands with shallow ledges and steep drop-offs.…