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Bida Nai

Bida Nai

Krabi, Thailand

Depth
Depth Icon

30m

Visibility
Visibility Icon

15m - 45m

Entry
Boat Entry Icon

Boat

Experience Level

Experienced

About Bida Nai
Also known as Inner father ! This is basically a beautiful submerged limestone island extending to several meters above water and dropping to a maximum depth of 30 meters below the surface. Most divers choose to dive here becasue of the amazing underwater landscapes and abundant marine life. Great micro and macro photo opportunity.

Bida Nai Dive Info

Terrain & Features

Reef, Rock, Other

Entry Type

Boat

Max Depth

30m

Visibility Range

15m – 45m

Experience Level

Experienced

Best Gas Mix

21% – 35%

O2
CNS Load (25 min)

16% at 28m / 36%

O2
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Marine Life
  • Clown Fish
  • Cuttle Fish
  • Groupers
  • Jacks
  • Leopard Sharks
  • Lion Fish
  • Pipe Fish
  • Rays
  • Squid
  • Trevally
  • Turtles
  • Various
Weather Conditions
Water Temperature ℃
Dive Operators near Bida Nai
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Location
Dive Site Hazards

  • Hidden Depth Variations — Complex reef topography can conceal depth changes, leading to unintended profile variations.

  • Distraction from Marine Activity — High fish activity can distract divers and delay depth or gas awareness.

  • Rapid Surge Direction Changes — Surge near reef structures can reverse direction quickly, pushing divers sideways into unexpected areas.

  • Bubble Trapping Under Overhangs — Rock overhangs can trap exhaled bubbles, reducing visibility and causing disorientation.

  • Reflected Surge Patterns — Surge reflecting off rock faces can create irregular and unpredictable water movement.

  • Current Funnel Effect — Narrow gaps between rocks can accelerate water flow unexpectedly.

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