The Blue Lagoon is a hidden swimming hole in the jungles of Vanuatu where a freshwater spring mingles with saltwater from the ocean causing the bright blue color. As a side not just as one of us was about to let go of the rope a sea snake swam by...

Camera Stats are:
Panasonic Lumix DMC-TS3
Built in zoom
4.9mm
1/100 at f/3.3
ISO 100