| The best diving season is between October | | | | standards of the sister centre in Koh Samet, this is |
| November and April. The best sites are on the west | | | | the premier diving operator in Eastern Thailand. The |
| and southern tip of the island, between Koh Chang | | | | Dolphin Divers at the Amari Emerald Cove Resort |
| and Koh Kood. There you can see soft corals, | | | | offers free trial in the resort's swimming pool. For |
| anemones, myriad reef fish, and sometimes eel. Hin | | | | those who prefer fun dives without a long boat trip |
| Luk Bat and Hin Lap both have coral seamounts. | | | | Dolphin Divers operate speedboats from the resort's |
| Further south, white-tip reef sharks can be found | | | | beach to the nearest dive sites in only 15 minutes. |
| near Hin Phrai Nam. | | | | Others include the Koh Chang Dive Centre on Kai Bae |
| In addition, there are two wreck dive sites. The Koh | | | | Beach, Paradise Scuba Divers at the Klong Prao |
| Chang Wreck is a Thai warship sunk by the French | | | | Resort and Koh Chang Divers on Had Sai Khao |
| navy in 1941. The wreck is only 15 metres deep in | | | | (White Sand Beach). |
| the Salakphet Bay on the southern tip of the island. | | | | The Dive Adventure Koh Chang has claimed to be |
| The other wreck is the Pak One Wreck which sank | | | | the only PADI 5 Star IDC center in Koh Chang with |
| after hitting a coral reef in August 1996 on its way | | | | its multilingual instructors and divemasters. It is |
| to Vietnam. It resurfaced almost 8 years later. The | | | | advantageously located at Bang Bao fishing village |
| 900-ton sunken tanker posed a danger to ships on | | | | with its own resort. |
| international waters. The Royal Thai Navy drained off | | | | A few dive centres operate out of Koh Mak. Boat |
| its 600 tonnes of liquefied petroleum gas and resank | | | | trips to various dive sites range from 1,800 to 3.000 |
| it between Koh Chang and Koh Samet. It now lies | | | | Baht depending on distances, and typically include two |
| horizontally in 35-meter deep waters. | | | | dives, full equipment, transportation, food, drinks and |
| There are a few diving centres on Koh Chang such | | | | a divemaster. |
| as the Ploy Scuba Diving in Bang Bao. Following the | | | | |