The Philippines forms the northern border of the Coral Triangle – the centre of marine biodiversity on the planet and one of the true wonders of the natural world. The Coral Triangle accounts for one per cent of the planet’s surface yet contains 30 per cent of the world’s coral reefs. Some 574 species of reef building coral create the home for nearly 1,400 species of reef fish. Add to the mix a host of pelagic wonders such as whale sharks, threshers and mantas, more critters and marine beasties than we are ever likely to be able to count and some awesome concentrations of Second World War wrecks and you have the ultimate diving playground.