GASLEO
Why dive here
With 177+ marine species recorded in the area - including barracuda, giant moray eels, whale sharks, clownfish and pufferfish - GASLEO offers some of Koh Lanta & Phi Phi's richest wreck diving.
Gasleo, a former oil tanker, sits upright and largely intact at a gentle 16 metres. We consider it one of the more underrated wrecks in the Andaman Sea. Built in 1980 and scuttled in 2003, it’s not ancient, but time and current have done a good job of transforming it into an artificial reef. You’ll find a surprising amount of soft coral growth clinging to the deck and superstructure, especially around the wheelhouse. Swimming through the cargo holds is our favourite part; the light shafts filtering down create a really moody atmosphere, and you’ll often find schools of snapper schooling inside, along with moray eels peeking out from pipes. Keep an eye out for lionfish resting on the railings. We find a morning dive here is usually best, before any stronger thermoclines kick in and drop visibility slightly. It’s a comfortable wreck dive, good for newer wreck enthusiasts, and a solid pick for two dives if you have the time.
Typical GASLEO Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
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