St Helena does not appear on the draw down list of sites so you need to find it - slap bang in the middle of the Atlantic and six days by ship from CT. Bit the voyage, which will be shorter once an airport is completed in 2016, is worth it all. Yesterday six of us snorkeled with a whaleshark; today we dived to 33m to the Darkdale, a WW2 ship sunk by a u-boat and were accompanied by a devil ray. Dives, including equipment and air, cost £20 with the excellent subtropic adventures.
This will permanently delete the comment. Are you sure?