Shark Island Koh Tao always raises the same question from first-timers: are there actually sharks? The answer is no — at least no more than anywhere else on Thailand’s diving island. The name comes purely from the shape of the rock above the surface, which from a distance resembles a dorsal fin cutting through the waves. Moreover, below the surface the story is altogether more welcoming. An exceptional coral reef teeming with giant groupers, moray eels, blue-spotted rays, nudibranchs and angelfish awaits every diver. Indeed, Shark Island Koh Tao is open to all levels, just 40 minutes from Mae Haad.

Shark Island Koh Tao: behind the name

Shark Island Koh Tao takes its name from its profile above the water. Seen from a distance, this granite rock rising out of the sea off the south-east coast looks remarkably like a shark’s dorsal fin — a striking optical illusion that never fails to raise a smile once divers are underwater. Below the surface, the atmosphere is considerably more peaceful than the name suggests. According to Wikipedia, Koh Tao is home to over 27 dive sites, and this one stands out for the quality of its coral reef.

Located 40 minutes by boat from Mae Haad pier, it is one of the most accessible all-levels sites on Thailand’s diving island. Its maximum depth of 18 metres and gentle to moderate current make it a welcome destination for Try Scuba beginners and experienced certified divers alike. In addition, divers with a passion for macro life and underwater photography particularly appreciate the richness of this reef.

An exceptional coral reef at Shark Island Koh Tao

The defining strength of Shark Island Koh Tao is the density and diversity of its coral. Branching corals, massive corals and table corals succeed one another along the rocky walls, creating an extraordinarily rich habitat for reef life. In contrast to some Koh Tao sites whose corals have suffered over the years, this reef remains in good health — colourful, alive and genuinely worth exploring slowly.

Furthermore, this coastal reef is particularly photogenic. Light filtering down from the surface illuminates the corals and creates ideal conditions for underwater photography. As a result, it has become one of Koh Tao’s favourite sites for divers pursuing the SSI Underwater Photography specialty course.

Marine life you’ll encounter here

This site rewards divers who slow down and look carefully. Behind every coral head, in every crack in the rock, a quiet but abundant life waits to be discovered. Our multilingual dive guides love bringing divers to Shark Island Koh Tao precisely for that quality of unhurried, detail-rich exploration. Moreover, the site pairs naturally with nearby Aow Leuk for a complete south-east Koh Tao dive day.

You can expect to encounter: a dense and colourful coral reef, giant groupers, moray eels in the crevices, blue-spotted rays on the sandy patches, multiple species of nudibranch, and angelfish at every depth. In short, this is one of the most varied reef dives on the island.

What level do you need?

Shark Island Koh Tao is accessible to all levels, from complete beginners on a Try Scuba experience to Advanced Open Water certified divers. Its maximum depth of 18 metres and coastal reef configuration make it reassuring for first-timers. However, its marine diversity and macro life keep experienced divers equally engaged throughout the dive.

Furthermore, the macro richness makes this a natural fit for the SSI Underwater Photography specialty course. Whether you are diving for the first time or the hundredth, there is always something new to discover. Check our fun dive prices for all available options.

Dive Shark Island Koh Tao with The Divers Boat

The Divers Boat organises fun dive trips to Shark Island Koh Tao, departing from Mae Haad — the main pier on Thailand’s diving island. The journey takes approximately 40 minutes by boat. Our blue boat is dedicated exclusively to our divers: small groups, attentive multilingual guides and a relaxed, welcoming atmosphere for every level.

In practice, this site pairs naturally with other south-east Koh Tao sites such as Aow Leuk for a complete and varied dive day. Contact our team to book your Try Scuba experience or fun dive at this colourful corner of Thailand’s diving island.