Sail Rock (Hin Bai)

A granite pinnacle rising ~15m above the surface and dropping to ~40m, roughly midway between Koh Tao and Koh Phangan. Dived as a full-day trip; the shallower zones hold much of the action.

Depth

5–30m

Current

Moderate

Diver level

Open water

Entry

Boat

Unique features

  • Vertical chimney swim-through, enter ~18m and exit ~6m
  • Schooling chevron barracuda, trevally and mackerel
  • Best single whale-shark chance in the Gulf

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.