Ko Dok Mai
Protected Area
Phuket Environmental Protected Area
Why dive here
With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Ko Dok Mai offers some of Similan Islands's richest diving. Water ranges 29-31°C, warmest April, May, June.
Ko Dok Mai, or "Flower Island," is more of a limestone pinnacle than an island, and we find ourselves drawn back to it repeatedly in the Similans. It’s got a real wall-diving vibe, dropping straight down into the depths. The eastern side is typically where we begin, drifting along the wall that’s just riddled with crevices and small caves. These little nooks are where the real magic happens, a perfect hideout for shy critters. Keep an eye out for octopus – not always a guaranteed sighting, but when you spot a Dollfus's octopus tucked away, it’s a tiny victory. The western side, while less dramatic, has its own charm. Here, we often find ourselves captivated by the sheer volume of tropical silversides and blackstriped cardinalfish, shimmering like a liquid curtain. It's a great spot for macro enthusiasts; we've spent entire dives just peering into the smaller cracks, finding blue-spot blennies and even a well-camouflaged freckled anglerfish if you’re patient enough. Currents here can pick up, especially around the northern and southern tips, so be prepared for a bit of a workout. We’d suggest going early in the morning for the calmest conditions and best light. Overall, Ko Dok Mai offers a rich tapestry of wall life, perfect for those who love to explore every crack and crevice rather than just zooming along.
Nearest Dive Centres to Ko Dok Mai
Dive shops near Ko Dok Mai
The Phuket Best Friend - Phi Phi excursion and scuba diving
Devils Divers
Thailand Aggressor
HKT Kids Dive Club
Champagne Diving
Underwater Way
Reviews for Ko Dok Mai
Conditions
Ocean conditions, forecast and tides for Ko Dok Mai
Ko Dok Mai Ocean Conditions
Monthly averages for Ko Dok Mai, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)
October Averages
Sea Temperature
30°C
85°F · Range: 28.7–30.4°C
Current Speed
5.1 cm/s
Direction: S (191.3°)
Salinity
29.75 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
Plan & book
Ways to dive Similan Islands, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in Similan IslandsPlaces to stay
via Booking.comHotels and dive resorts near Similan Islands.
Search stays in Similan IslandsDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near Ko Dok Mai
Prices from Booking.com. We may earn a commission at no extra cost to you.
