One of the greatest coral reef ecosystems in the world, the Tubbataha Reef in the Philippines, continues to prosper. Undersea coral walls that plunge more than 300 feet deep are home to some 600 species of fish and 360 kinds of coral, about half of all known species. According to experts, the ocean wilderness of Tubbataha Reef is about the closest thing to a true natural state for any reef in the world.
