Project Description

Koh Doc Mai MapKoh Doc Mai Map

Koh Doc Mai – Island of flowers

  • Distance: 16 Km boat trip of approx. 60 minutes.
  • Depth: 0-25 meters

  • Experience: Beginner to advanced

  • Reef type: Steep wall with caves, decorated with a lot of life

  • Visibility: Variable, 2-25 meters

  • Current: Variable, often strong

  • Corals: Colorful soft corals

  • Fish: Macro-organisms, nudi branches, shrimps, abundance of fish and biodiversity

  • Highlights: Blue Dragons, frogfish, seahorse, pipefish, nurse sharks, caves

Koh Doc Mai is a limestone island that rises vertically from the seabed. The surface is overgrown by a dense jungle. This nearest dive site from Phuket is in a class of its own. Diving is possible in all conditions, because the island provides protection against strong winds and rough seas.

Koh Doc Mai means “island of flowers”. There are several stories about how the place got its name. Some say it is because the island was once full of blooming flowers. Others claim that the name was derived from the yellow tube corals that “bloom” in the current. Although the visibility on this island is generally not as good as at other places, this dive site is well known for the diversity and rarity of the reef inhabitants. These include seahorse, pipefish, ghost pipefish, frogfish, numerous crabs and shrimps, nudibranchs, slugs, turtles, lion-fish, moray eels and barracuda/snapper schools. The east side of the island has a steep wall with yellow tube corals and two caves at a depth of 14 and 22 meters. Since the cave’s exits are visible at all times, any diver who wants to take a look can go inside (torch recommended). Under a coral block a bit deeper in the sand and off the wall, nurse sharks can sometimes be seen. 

The often strong currents experienced at Koh Doc Mai can be a challenge for even experienced divers. It is recommended that you follow the advice on technique from your guide or instructor and with a bit of practice, this dive site is guaranteed to become the absolute favorite! The southern part of the island has many large overhangs and turns into a slope towards the east side. The east of Koh Doc Mai is characterized by its 45 degree slope. The state of the current and time of day will determine your choice of dive site.


Koh Doc Mai can be dived in most conditions, however to get the best experience it will be selected based on the weather conditions, currents, overall safety and suitability for the majority of divers on the boat. We cannot guarantee specific dive sites prior to the boat departing.

You can dive Koh Doc Mai on a Scuba Diving Day Trip.

Explore dive sites beyond Koh Doc Mai

I want to see Sharks, Mantas and Turtles – You need to be lucky, but as a passionate diver you hopefully will enjoy also all the other great and rare creatures at Phuket’s popular dive sites. Let yourself amaze about the bunch of various marine life and the divine underwater landscape.
Gate to a mystic world – Open it and get in touch with our experience diving instructors and become a certified, respectful and safe diver. For continuing education; keep calm and dive on!