Phuket is Thailand's largest island, and one of its oldest international tourist resorts. In 2007, more than 5 Million people visited the 543 square-kilometer island. It's no wonder that the island's rather small airport is Thailand's second-busiest.
With so many visitors, it should be no surprise that there are plenty of shops and tour organizers catering to diving travelers. Indeed, one of Thailand's largest dive supplies shops is based on Phuket.
Some people choose to stay on Phuket, to take advantage of the wide range of hotels, resorts, restaurants and other activities that the island offers. You can reach several good dive sites on day trips from Phuket, but many of the best sites are better done as a liveaboard. To get more information about what there is to see and do on Phuket, see the Thailand for Visitors Phuket travel guide.