Many of them are uninhabited and absolutely pristine , with dive sites to rival the best in the world . In Phuket, half day tours are available to the west coast where a short trip by motor boat takes the diver to the coral reefs. By far the most popular tours, however, are the full day trips to the islands off Phuket s south and eastern coasts. These islands include Ko Racha, Shark Point, Ko Dok Mai and Phi Phi islands. Swimming can be enjoyed all year round and is mostly safe.
Undertows can be problematic during the rainy season.
It is best to seek the advice of local people regarding swimming conditions. Snorkeling is good in sheltered bays all around Phuket and is particularly enjoyable at easily accessible reefs at Patong, Karon, and Kata beaches. Fins, masks and snorkels can be rented on a daily basis from shops all over the island. Windsurfing is available at all major beaches. Boards may be rented by the hour, half-day, full day or week.