If you're lucky you may find turtles, nurse sharks and
giant jawfish resting in the dark recesses of the tunnel, but always you will find a school of curious looking glassy sweepers just before the tunnel exit at 100ft (30m).
Dolphins, manta rays, reef sharks,
giant trevallies, mobula rays circling the boat lights at night, a brooding
jawfish with a mouthful of eggs, pygmy seahorses, frogfish, ghost pipefish, very healthy reef fish life and innumerable crustaceans and invertebrates.