Marine and beach tourism is one of the still growing fields in tourism worldwide. Marine and beach tourism activities include scuba diving, snorkeling, wind surfing, fishing, observing marine mammals and birds, cruising or ferry riding, sea kayaking, visiting fishing villages and lighthouses, sailing, and motor yachting. The growth in marine and beach tourism has helped develop and improved coastal areas. Thailand, with its numerous attractions and tourist destinations, continues to amaze the world regarding marine and beach tourism. One of the most popular marine and beach destinations in Thailand is Phuket. Phuket is Thailand's largest island and considered to be the most famous. This island has an exceptional climate: The monsoon in Phuket comes earlier than in the other parts of the gulf and during the rainy season, the island experiences rain only once or twice a day. The purpose of this study aims to develop the fields of ecotourism, sea tourism, and beach tourism. The study was conducted at the site of Phuket, being one of the worldwide known marine and beach attractions and well-known among foreigners. Moreover, the island of Phuket also has many beautiful marine and beach attractions that are still to be discovered by the public and need to be developed to entice more tourists to come and revisit the island.