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Diving in Koh Samui

Explore diving in Koh Samui

Descend into the clear, tropical waters surrounding Koh Samui and you’ll know you’ve found aquatic paradise. The Gulf of Thailand is teeming with tropical marine life, and divers from all over the world come to dive in Koh Samui to experience this underwater wonderland.

Offering a range of sites from granite pinnacles, rocky seamounts and vibrant coral reefs teeming with life, this small island packs a mighty punch. You can see why diving in Koh Samui is a popular choice.

As you head out to deeper sites, keep your eyes out into the blue for whale sharks who frequent these waters. Stingrays, eels, barracuda and turtles are often pass you by. Black coral, barrel sponges, sea fans and an abundance of soft coral peppered with sea anemones make diving in Koh Samui a firm favourite.

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When to dive in Koh Samui

Koh Samui’s calm, bright waters provide stable conditions throughout the year. With water temperatures never dropping below 84°F/29°C, you can see why diving in Koh Samui is loved by so many.

You can appreciate rock and coral formations, as well as titan triggerfish, sea snakes, hawksbill turtles at any time of year. Whale sharks cruise into the deeper pinnacles through all seasons but are most likely to appear in April-May when the plankton levels are higher. Keep your eyes peeled for these majestic creatures cruising through.

Visibility stretches to 30m from July-September - the best conditions for spotting small critters. Macro lovers seek nudibranch and shrimp inside crevices and gaps between rocks or hiding in artificial reefs. Beautiful subjects for underwater photography.

Book your diving in Koh Samui

Common marine life sightings for Koh Samui

Calendar
JanFebMarAprMayJunJulAugSepOctNovDec
Sharks and Rays
Blacktip reef shark
Whale shark
Rays
Mammals and Reptiles
Hawksbill turtle
Common dolphin
Sea snake
Ocean Fish
Grouper
Seahorse
Barracuda
Molluscs and Crustaceans
Nudibranch
Eels and Echinoderms
Eels
Most likely sightingsPossible sightings

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