Lặn ở đảo Tenggol Tenggol Island, located off the coast of Terengganu is considered one of the most beautiful islands in Malaysia. If you are looking for a luxurious vacation, then you can book a stay at a small private island; however, if you are looking for a more budget-friendly option, you can choose to stay on Dungun mainland and go on a day trip to the many diving spots in Tenggol Island. Tenggol is home to a wide range of nudibranchs, turtles and reef fishes. You can also expect to encounter whale sharks.