
Twin Bay Resort Koh Lanta
★★★
★ 9.2/10 (1,002 reviews)
5 km away as the crow flies
Dive centre · Koh Lanta · Thailand
5.0216 Google reviewsExplore the dramatic walls and canyons of the Andaman Sea with expert-led trips to Hin Daeng and Hin Muang.

Apex Divers is situated in Koh Lanta, providing a gateway to some of the most significant dive sites in the Andaman Sea. From the calm, sheltered lagoons of Koh Haa to the deep, dramatic drop-offs of Hin Daeng and Hin Muang, the area offers a diverse range of underwater topographies.
The region is defined by its vibrant coral ecosystems and the chance to encounter large pelagics. Whether you are looking to complete your initial certification or are an experienced diver seeking to explore deep canyons and wreck sites, the local waters provide a varied and engaging environment.
The team at Apex Divers is composed of experienced instructors dedicated to guiding divers through every stage of their underwater journey. They manage everything from the first breaths of an Open Water student to the advanced technical requirements of a Divemaster candidate.
Instruction is tailored to the individual, ensuring that safety and comfort remain the priority during both training sessions and guided fun dives. The centre also supports those interested in non-traditional disciplines, offering specialised guidance for freediving and environmental conservation through coral propagation.
Apex Divers offers a full spectrum of training programmes. Beginners can start with the Open Water Course, while those looking to expand their skills can progress through the Advanced Adventurer Course and the Stress and Rescue Course.
For divers moving towards a professional career, the Divemaster programme is available. The centre also caters to niche interests with dedicated Freediver courses and a Coral Propagation Course for those interested in reef ecology and conservation.
The centre provides a complete range of equipment for hire, ensuring you can dive with high-quality kit regardless of whether you travel with your own setup. This includes regulators, wetsuits, fins, and masks, as well as torches for night diving.
For those looking to invest in their own setup, the centre also offers equipment sales. The shore-based facilities are designed to support your dive day, providing the necessary infrastructure for rinsing and preparing your gear.
Hin Daeng and Hin Muang are two of the most renowned sites in the Andaman Sea, featuring spectacular walls and canyons that reach depths of 70 metres. These sites are prime locations for encountering manta rays and, occasionally, whale sharks.
Koh Haa offers a versatile range of environments, including the calm Koh Haa Lagoon, which is accessible from Open Water level. More advanced divers can explore Koh Haa Number 1, home to the Fish Bowl and the Chimney Caves.
The Kled Kaew Wreck, located near Koh Bida, provides an interesting ecosystem where history meets marine life. Large schools of yellowlined snappers often congregate around the structure, which is heavily encrusted with coral.
Koh Bida is a highly regarded site for all levels, featuring vibrant reefs and the chance to see leopard sharks. The area around Hin Bida and Hin Klai is particularly noted for its suitability for those looking to see reef sharks in a shallower environment.
And some of the dive sites the centre runs.
The Andaman Sea is home to a vast array of pelagic species. Divers may encounter manta rays (Mobula alfredi), whale sharks (Rhincodon typus), and various shark species including leopard sharks (Triakis semifasciata), blacktip reef sharks (Carcharhinus melanopterus), and grey sharks. Large predators such as trevallies, jacks (Carangidae), and barracudas are also common visitors to the reefs.
The reef structures themselves are built upon a foundation of diverse hard and soft corals (Alcyonacea), including sea fans (Gorgoniidae) and large barrel sponges. These habitats support colourful populations of reef fish, such as butterflyfish (Chaetodon), angelfish (Pomacanthidae), and various species of snappers (Lutjanus), alongside batfish (Platax) and parrotfish (Calotomus).
For those with an eye for detail, the macro life is exceptional. You can find a variety of nudibranchs, seahorses (Hippocampus kuda), and ornate ghost pipefish (Solenostomus paradoxus) tucked into the reef. The crevices often hide frogfish (Antennarius), scorpionfish (Scorpaenidae), and various species of shrimp and crabs, providing a constant source of interest for macro photographers.
Diving conditions vary depending on the specific site. At Koh Rok, the currents are generally described as low, making it a comfortable location for those preferring more relaxed environments. Other sites, particularly the deeper walls of Hin Daeng and Hin Muang, may present different conditions requiring more experience.
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