A wall dropping down 60 metres, with curling encrusting corals, waterfalls of fusiliers scattered by predatory trevally and snapper and a cave with a balcony frequented by hawksbill and green turtles.

Shallower, the reef is pierced by crevasses and gullies that we can swim through into a pool of light where there is prolific hard coral growth, then a tunnel through the reef to ‘Sundance’.

Here, as we swim under the lip of the reef, the sun pours through holes and cracks, producing swaying, shimmering beams of light through which swim reef surgeonfish, sweepers and trumpetfish, illuminated by the glittering rays cutting through the blue.