intermediate·Wreck Dive
HTMS Sattakut Wreck
West, Mae Haad · Koh Tao, Thailand
Depth: 18–30m10 species tracked36 scans
A decommissioned Thai Navy vessel sunk in 2011 as an artificial reef, sitting at 30m off Mae Haad. Home to lionfish, scorpionfish, moray eels, and encrusting corals. Excellent for wreck penetration.
Top 5 Species to Watch For
Hawksbill Sea Turtle
Eretmochelys imbricata
Critically endangered sea turtle, common at White Rock and Twins. Recognized by narrow pointed beak.
Giant Moray Eel
Gymnothorax javanicus
Large moray found in crevices across all sites. Most abundant at HTMS Sattakut wreck.
Lionfish
Pterois volitans
Venomous but spectacular. Very common on the HTMS Sattakut wreck and rocky reefs.
Titan Triggerfish
Balistoides viridescens
Territorial and aggressive during nesting. Common at White Rock and Twins — maintain distance!
Octopus
Octopus cyanea
Day octopus, common across all rocky reef sites. Masters of camouflage.
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