SNORKELING - Made up of 7,107 island and countless coral reefs, the Philippines is a paradise of snorkeling opportunities. Take your pick from 34,000 sq km (13,124 sq m) of coral reefs, some of which have grown since the Ice Age; over 100 reef slopes; over 800 classes of corals; over a thousand species of marine life; over 400 fish species and over 500 fish families; and the most populous and diverse aquatic ecosystem you could ever find.