Koh Tao, Thailand

Koh Tao, often hailed as the diving capital of Southeast Asia, is a small island in the Gulf of Thailand renowned for its vibrant underwater world and as a global hub for scuba certifications. With 27 dive sites surrounding the island, it offers an incredible variety of environments, from shallow coral gardens teeming with colourful reef fish to deeper granite pinnacles and even a few wrecks. Its reputation is built on accessible, sheltered bays perfect for training, alongside more challenging sites that attract experienced divers, making it a uniquely versatile destination.

Diving conditions in Koh Tao are generally excellent year-round, with warm tropical waters and good visibility. The island's protected location ensures calm seas for most of the year, providing a comfortable and safe environment for all skill levels. Divers flock here not just for the affordable courses but for the rich marine biodiversity, which includes everything from turtles and moray eels to the occasional, awe-inspiring whale shark. This combination of accessibility, affordability, and exciting marine encounters makes Koh Tao an essential stop for any diver exploring Thailand.