At four degrees north of the Equator and surrounded by ocean and sky, you are a flea hovering on the curvature of the earth. Even to marine life going about its eternal business with fish-brained stoicism as you waddle deeper into the transparent lagoon, you&rsquore just another plastic-webbed phony, not predator, in search of some cheap thrills. Your big city bluster pops. You realise how irrelevant you are.