May is the end of the Similan Islands liveaboard season, and also one of the quietest times to enjoy the dive sites without too many other boats around.
Octopus comfy amongst the corals, Turtle Rock © [email protected]
Out on the final trip of the Similans season on MV Blue Dolphin liveaboard. May is always quieter to be out on the water, with less boats around, which makes for more peaceful dives. The conditions are usually great too but on this trip they were quite challenging with currents moving across the dive sites from unexpected directions and both the water temperature and visibility being very variable over the four days. But, as ever, there was plenty to see and Richelieu was still super active as it has been all season.
West of Eden
Fan corals, West of Eden © [email protected]
Fish over the boulders, West of Eden © [email protected]
Soft corals, West of Eden © [email protected]
Fusilier run, West of Eden © [email protected]
Three Trees
Anthias over the hard coral reef, Three Trees © [email protected]
Soft corals, Three Trees © [email protected]
Barracuda approaching, Three Trees © [email protected]
Barracuda on the turn, Three Trees © [email protected]
Giant barrel sponge, Three Trees © [email protected]
Yellow snappers, Three Trees © [email protected]
Turtle Rock
Octopus amongst the corals, Turtle Rock © [email protected]
Christmas Point
Jellyfish being eaten by rabbitfish, Christmas Point © [email protected]
Koh Bon
Octopus surrounded by fish, Koh Bon Bay © [email protected]
Koh Tachai
Fusilier storm approaching, Koh Tachai © [email protected]
Fusiliers overhead, Koh Tachai © [email protected]
In amongst the fusiliers, Koh Tachai © [email protected]
Yee and Bri © [email protected]
Richelieu Rock
Glassfish around the reef, Richelieu Rock © [email protected]
Glassfish bowl, Richelieu Rock © [email protected]
Glassfish swirl, Richelieu Rock © [email protected]
Sardine ball and rabbit fish, Richelieu Rock © [email protected]
Glassfish over the reef, Richelieu Rock © [email protected]
Jacks around the top of the rock in a cloud of glassfish, Richelieu Rock © [email protected]
Rock with fusiliers running around, Richelieu Rock © [email protected]
Barracuda and jacks, Richelieu Rock © [email protected]
Fusilier run, Richelieu Rock © [email protected]
Fusilier run, Richelieu Rock © [email protected]
Fusilier run and glassfish ball, Richelieu Rock © [email protected]
Glassfish ball, Richelieu Rock © [email protected]
Koh Bon Pinnacle
Sea snake, Koh Bon Pinnacle © [email protected]
Filefish around fan coral, Koh Bon Pinnacle © [email protected]
Similan Liveaboards Overview
- Luxury Similan Island Liveaboards
- Mid Range Similan Island Liveaboards
- Budget Similan Island Liveaboards
- Last Minute Liveaboard Deals
- Diving The Similan Islands 2025: A Quick Guide
- Similan Islands Dive Sites
- Diving Thailand Guide
Upcoming Similan Liveaboard Availability and Pricing
Check availability and pricing for all Similan Islands liveaboards departing in
- October 2025 | November 2025 | December 2025 | January 2026 | February 2026 | March 2026 | April 2026 | May 2026
(The Similan National Park is closed from mid May to mid October each year)
Similan Liveaboards Trip Reports
Photos from each of the Similan liveaboard trips I've been on over the years.
- Similan Islands Liveaboard Trip Report 9-13 February 2025
- Similan Islands Liveaboard Trip Report 21-25 November 2024
- Similan Islands Liveaboard Trip Report May 2024
- Similan Islands Liveaboard Trip Report 21 - 25 February 2024
- Similan Islands Liveaboard Trip Report 15 - 19 February 2024
- Similan Islands Liveaboard Trip Report December 2023
- Similan Islands Liveaboard Trip Report October 2023
- Similan Islands Liveaboard Trip Report April 2023
- Similan Islands Liveaboard Trip Report February 2023
- Similan Islands Liveaboard Trip Report December 2022
- Similan Islands Liveaboard Trip Report February 2020
- Similan Islands and Myanmar Trip Report March 2015
