Tioman Island's coral reefs are among Malaysia's best snorkeling and diving destinations, part of a protected marine park since 1994. Crystal-clear waters reveal an amazing underwater world filled with colorful corals, tropical fish, reef sharks, and both green and hawksbill sea turtles. Renggis Island is the most famous snorkeling spot with shallow, crystal-clear waters teeming with marine life. Tulai Island and Malang Rock offer exceptional diving experiences with pristine coral formations. Monkey Bay features unique artificial reefs made from retired Light Rail Transit coaches, creating habitats for diverse marine species. Best time to visit is March to October when waters are clear and weather is ideal. Snorkeling tours visit multiple sites and cost RM65-100 per person.