Kled Kaew Wreck, Koh Phi Phi: Thailand's thriving artificial reef

Dropping down onto the Kled Kaew, you immediately sense the purpose behind its sinking: to create a thriving habitat. The Royal Thai Navy submerged this vessel in 2014, and even in its relative youth, the wreck has been colonized by an impressive array of marine life. Located 8 km north of Phi Phi Leh, the Kled Kaew offers a different kind of dive experience from the natural reefs of the region, providing a complex structure for fish to shelter and feed.

The dive profile here is straightforward, descending from a shallowest point of 14 metres down to a maximum depth of 26 metres. As you make your way around the wreck, the sheer volume of fish is striking. The entire structure is often enveloped by large schools of yellowtail barracuda and mackerel, moving in synchronous flows that can momentarily obscure parts of the wreck itself. You’ll need to remain aware of your position relative to the main structure as these walls of fish pass by.

Closer inspection of the wreck's many crevices and ledges will reveal a host of resident inhabitants. Look for lionfish and scorpionfish, perfectly camouflaged masters of ambush that are commonly spotted in every corner of the Kled Kaew. Their vibrant, often venomous fins provide a striking contrast against the developing encrusting life of the wreck. Patience will often reward you with a closer look at these fascinating predators.

Beyond the obvious large schools and camouflaged hunters, the Kled Kaew hosts a diverse supporting cast of reef fish. Porcupinefish puff out defensively when approached, while various groupers patrol the deeper sections. Rabbitfish, snappers, damselfish, and trevallies dart between the metal beams, contributing to the busy ecosystem. Even squid can be recognized moving gracefully through the water column, adding another layer of interest to this submerged world.

While the Kled Kaew is a compelling dive, it’s important to acknowledge its sensitivity to currents. These can vary, sometimes picking up unexpectedly, which adds an element of challenge to navigating the wreck. The constant flow of water is, however, a key factor in attracting the nutrient-rich waters that support such a dense population of fish. Certain areas, such as the railings and ladders near the small cabin on the upper deck, offer the possibility of limited penetration for those with the appropriate training.