Not as good as you might expect - Sharm's real attraction lies under the crystal-clear waters of the Red Sea, where pristine corals and a relatively unspoilt marine environment have made it one of the world's top dive spots.

The island consists of pristine coral sandy beaches with coves formed by giant granite boulders and fringed with lush green jungle.

There are no pristine coral reefs left in the world.

Little Cayman has probably the finest diving of all - pristine coral on walls as massive as cathedrals.

First-time snorkelers will be happy with the coral and fish at the protected southern side of Pu'u Keka'a, but the real prize is the horseshoe cove cut into the tip of the rock, where there's more pristine coral, abundant tropical fish and the occasional turtle.

Protected from fishing by its marine park status, this place has some of the most pristine coral in Thailand.