Overview
Koh Tas is a small uninhabited islet close to Sihanoukville, popular for diving and snorkeling thanks to its preserved coral and reef fish communities. Depths of 5-15 m suit beginners, and PADI Open Water courses run here frequently. Day tours typically combine Koh Tas and Koh Rong with a BBQ lunch, and visibility is best in the afternoon. Diving USD 50-80; snorkeling tours USD 20-30. About 30 minutes by boat from Sihanoukville.
Opening Hours
Dive centers 08:00-17:00 (by reservation)
Travel Tips
Visibility is best in the dry season (Nov-Apr). Don't wear fins on the coral — protect the reef.
Hotels near Koh Tas Diving Site
Hotels and guesthouses in Sihanoukville, Koh Tas, Sihanoukville
Other attractions in Sihanoukville
Otres Beach
Sihanoukville's best beach - a quiet, pristine stretch of white sand.
Koh Rong
A hidden-gem Cambodian island of crystal-clear seas and lush tropical jungle.
Ream National Park
A nature park where you can experience mangrove forests and coastal ecosystems.
Koh Rong Samloem
Quieter and more pristine than Koh Rong — a Cambodian paradise island.
Independence Beach
A 1.5 km palm-lined beach in front of the historic Independence Hotel.
Wat Leu (Upper Pagoda)
A gilded Buddhist temple on a hill overlooking Sihanoukville.
Serendipity Beach
Sihanoukville's main beach and the launch point for island ferries.