Koh Bida Nok

A limestone islet south of Phi Phi Leh with a shallow reef where young blacktip reef sharks are among the most reliable in the region; deeper walls hold hawksbill turtles and gorgonians.

Depth

5–22m

Current

Mild

Diver level

Open water

Entry

Boat

Unique features

  • Blacktip reef sharks in the shallow bay
  • Sloping coral wall with snapper and turtles

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.