Indonesia has an archipelago of more than 17000 islands, stretching 5000 km from east to west - a distance equivalent to the width of the US. Of all the countries in South-East Asia, it is probably the one least associateed with scuba diving.

Malaysia is divided into two main areas. Peninsular Malaysia is linked to Thailand in the north and, via a causeway, to Singapore in the south. Further to the east, on the island of Borneo, are the two states of Sabah and Sarawak.

The Philippines is one of the best diving destinations in the world. Regardless of your taste, there is something for everyone - walls, reefs, drop-offs, lagoons, submerged islands, wrecks, and an abundant sea life.

Not a traditional dive destination, Singapore none-the-less has a number of dive operators that provide regular tours to the more traditional dive sites in Malaysia, Thailand and Indonesia.

Thailand is probably the best known, and most developed, of all dive-destinations in South-East Asia. With access to the Andaman Sea in the west, and the Gulf of Thailand in the east, and a well developed tourism infrastructure, it is easy to understand why.

Vietnam is growing as a tourist destination, and with it the diving, which is so far not very developed.