For most of us, the colourful, otherworldly marinescapes of coral reefs are as remote as the alien landscapes of the moon. We rarely, if ever, experience these underwater wonderlands for ourselves – we are, after all, air-breathing, terrestrial creatures mostly cocooned in cities. It is easy, therefore, not to notice the perilous state they’re in: we’ve lost 50% of coral reefs in the past 20 years...
