Palau is best known for its famous Jellyfish Lake. In this body of water, jellyfish have evolved without stingers, so visitors can swim among them without fear of the painful jabs inflicted by most members of the species. The lake is not technically a scuba diving site, since air tanks are not permitted for conservation reasons. However, people can still swim amongst the jellyfish with a mask and snorkel.
For those who want an air-tank aided experience, Palau is also a great destination for open water, wall and reef diving. A place known as Blue Corner features nutrient rich waters, which draw smaller reef fish and, in turn, larger fish such as tuna, barracuda and sharks. More advanced divers might even tackle the caverns and tunnels known as the Blue Holes, which are located near the Blue Corner dive site. A number of other reefs and sandy-bottom channels are found around Palau. Divers can explore these areas and see a variety of small and large marine life, including sharks and manta rays.