The Philippines is considered a world-class diving destination. The islands have one of the most productive marine ecosystems in the world, a wonderful diversity of more than 800 types of colourful corals, and a vast array of marine life that exists beneath its deep blue waters. There are a number of dive sites throughout the islands that suit either beginners or expert divers. The best known of these are Batangas, Boracay, Cebu, Mindoro and Palawan, most of which are within easy reach from Manila. For complete novices, it is a popular tourist activity to attain a diver's licence while on holiday in the Philippines - a great way to return home with a skill you didn't possess when you left.