Although Bali is one of the world’s most underrated destinations for divers, it has some exceptionally beautiful diving sites. Crystal Bay Nusa Penida is an attractive site in this respect. Bali has a surprisingly rich underwater life, which is mainly due to the fact that it is located between two great oceans, the Indian ocean and the Pacific.
As a result of this ideal position, an enormous flow of water passes between Bali and Nusa Penida depositing plankton larvae that attract a high diversity of fish.
Nusa Penida is an island situated 28 km east of Benoa/Sanur, located next to the smaller sister islands Nusa Lembongan and Nusa Ceningan. On the far side of Nusa Penida, in the Indian Ocean, lies the Wallace Line, a trench of 1,3 km deep that separates Western Indonesia from Austronesia. At Nusa Penida, which forms a barrier, the ocean currents coming North cause strong upwellings of cold water, which brings large fish with it, such as sharks, mantas, trevally and the Oceanic Sunfish.
Crystal Bay has relatively calm diving conditions. The water is crystal clear thus excellent for snorkelling. At Crystal Bay you will see schools of anthias and batfish which comes around periodically. A bat cave is located nearby. There is a beautiful white sandy beach at Banjar Penida, west of Sakti village on the north western coast facing Nusa Ceningan. Crystal Bay is one of the few places in the world where one can see the awesome mola mola. One can be reasonably sure of a sighting during the season if two or three days of diving are allowed. And for sure, diving with the Sunfish is an experience that you will never forget. The mola mola can reach a length of 3 metres and a weight of over 2,000 kg. They are usually found in deep and cold oceanic waters but occasionally they come inshore, in Bali between July and September.