Koh Chi

A northern islet with granite boulders and caverns at its north end. Current can be strong, and it draws blacktip reef sharks, trevally and turtles.

Depth

5–22m

Current

Moderate

Diver level

Advanced open water

Entry

Boat

Unique features

  • Granite boulders and caverns at the north end of the islet
  • Blacktip reef sharks, trevally and barracuda
  • Hard coral over the seabed

Sources & last checked

Checked July 2026

This is a researched draft, not yet human-verified. The seasonality and logistics are drawn from the sources below — confirm specifics (permits, fees, closures) with an operator before you book.

Note on the data: Coordinates are approximate; not surveyed dive-site GPS.