Koh Hong Island – Thailand
The main island, Koh Hong is uninhabited, except for the birds, white-faced gibbons and giant monitor lizards that can be often spotted on the main white sand beach (at quiet times, at least). Its interior is home to a large lagoon (the “chamber” to which its Thai name “Hong” refers). This is best accessed at low tide by kayak, as the diminishing water level makes its colour change drastically from a deep emerald green to a clear turquoise; motor boats (either longtail or speedboats) will go around mid-tide. The entrance to the lagoon is through a dramatic cliff passage that should be photographed on your way out.