Bio Rock

Artificial reef in Koh Tao promoting coral growth with weak currents.

Boat Access
7m Avg Depth
14m Max Depth

About this dive site

This dive site, Bio Rock, is a pioneering artificial reef project located off the coast of Koh Tao, opposite the scenic Japanese Garden. It utilizes weak electrical currents to accelerate the growth of coral seedlings, creating a unique habitat and a living laboratory for marine conservation. Divers can explore a network of submerged structures that are rapidly becoming vibrant coral gardens, easy to navigate due to the site's design and purpose.

The developing reef at Bio Rock is home to a diverse array of coral fish, including brightly colored butterflyfish, bannerfish, anemone fish, and parrot fish. Various species of corals are actively growing on the artificial structures themselves, alongside natural coral formations found along the adjacent coast, demonstrating the success of the rehabilitation efforts.

Bio Rock is an excellent dive site suitable for year-round visits, with calmer conditions typically enhancing the experience during most months. It's particularly well-suited for beginners due to its shallow maximum depth of 14 meters and generally mild currents. The site offers fantastic opportunities for macro photography and is also highly recommended for freedivers interested in exploring the unique structures and burgeoning marine life.

DivingFreedivingSnorkeling

Site Ratings

Big Marine Life Fair
Macro Marine Life Very Good
Landscape Quality Very Good
Water Visibility Very Good Viz

Plan Your Visit

artificial reefcoral reefbeginner friendlymacro photographyfishconservation siteunique dive site

Things to Note

Difficulty:

Beginner

Shallow depth (max 14m), mild currents, and easy navigation make it ideal for new divers.

Current Strength:

Mild

Plan Your Dive

Ready to explore Bio Rock? Find dive operators and book your adventure.

This dive site information and pictures are sponsored by Pia K. (#4532777)

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