Tulamben has become Baliâ€™s most famous diving area. Tulamben Bay, like the rest of Bali, is situated in the richest marine biogeographic zone in the world. Being on the northeast coast, the bay receives plankton rich waters from the major ocean currents that move from the Pacific to the Indian Ocean. This, coupled with the fact that the three main dive sites provide totally different physical environments, means that Tulamben contains a stunningly diverse underwater ecosystem.
The black sand of Tulamban does not provide the reflective properties of white limestone sand and, combined with the amount of plankton in the water, accounts for the relatively low visibility. It does however provide a dramatic contrast, which brings out the colours of the corals, gorgonians, fish and other marinelife.