Snorkelling Trips. The calm, clear water makes the Tarutao Marine Park area ideal for snorkelling, with 25% of the world's tropical fish species found in the area. On the island Ko Tarutao itself there is not much to see when snorkelling, even though there is a good spot on the northeast side of the island which you can reach by longtail boat. According to the park staff, it is not worth going if you plan to go on to Ko Lipe or Ko Adang afterwards.