Komodo Island and national park reserve offers just about every type of tropical diving imaginable - from calm and colourful shallow reefs alive with hundreds of colourful reef fishes and crammed with invertebrates, to current-swept deep water sea mounts, walls and pinnacles patrolled by sharks, tuna and other big fish. The variety of marine life for scuba diving in Komodo rivals the world's best dive destinations. This is the world's epicentre for marine diversity and you will see a variety of species here, on a diving cruise that you just won't see anywhere else in the world; from whale sharks, sunfish, mantas and eagle rays, to pygmy seahorses, ornate ghost pipefish, clown frogfish, nudibranchs and blue-ringed octopus - all at home amongst a spectacular range of colourful sponges, sea squirts, tunicates and corals - a macro enthusiast's heaven.

Geologically, Komodo and Rinca are part of Flores, separated from Sumbawa to the west by the Sape Strait. In the middle of the strait, the bottom drops to almost 300m. The many islands and relatively shallow seas between Flores and Komodo's west coast mean very fast currents at tidal changes. There are deep seas both north and south and upwellings bring nutrients and plankton to keep the seas rich and well fed. Unlike other parts of Indonesia, the reefs around the south of the islands have suffered relatively little damage from dynamite fishing. Much of the area now lies within the protection of the national park.