The Gili Islands are never going to win any prizes for the quality of marine life, ask anyone in the diving business. If you are looking for spectacular diving, go to Manado in Sulawesi, Komodo, Ambon, or West Papua (Irian Jaya).
Still, there are dive operators on all 3 Gili Islands, and there is a developed industry there, with well known dive spots and plenty of supporting infrastructure as far as transport, hotels and food places.
The Gili Islands are surrounded by reef and located on the northern side of Lombok, are sheltered from big swells. The depth is around 25 meters, with visibility around 15 meters, water temperature warm.
