Crystal Bay Beach is a nice secluded cove with a white sandy beach.It’s also a great place for snorkelling. At Crystal Bay you will see schools of anthias and batfish which comes around periodically. A bat cave is located nearby.rystal 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.