Koh Bida Nai

The sister islet to Bida Nok, with resting Indo-Pacific leopard sharks on sandy patches, seahorses and ghost pipefish in the corals, and easy topography suiting Open Water divers.

Depth

5–22m

Current

Mild

Diver level

Open water

Entry

Boat

Unique features

  • Leopard (zebra) sharks on the sand
  • Swim-throughs and hard-coral gardens

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.