This spot is one of the most popular diving locations in Bali. Being rather shallow, it is ideal even for those beginning with diving. It is also slightly off the beaten track and not as touristy as the prime Bali diving sites. Come and swim with the giant sunfish here!
Wikipedia https://en.wikipedia.org/wiki/Nusa_Penida#Crystal_Bay
Info http://www.wonderfulbali.com/crystal-bay-nusa-penida/
Address Indonesia
Coordinates -8°40'40.202" N 115°26'33.797" E