According to Swiss Cottage Tioman Island, Mask and snorkels are included if you are doing a boat trip. You can also hire masks, snorkel and fins from the Swiss Cottage reception, if you would like to explore the house reef. If you are doing a boat trip, we recommend you bring the following with you Towell Wide brim hat to protect you from the sun A Rash guard with UV protection Water bottle (you can refill your water bottle at reception anytime) Sunscreen (some sunscreens kill the reef, please read this article on sunscreen)