Koh Bida Nai

Type:

Scuba Diving

Entry:⚓Boat Entry

Difficulty:Intermediate

Tags:

Reef

About This Dive Spot

Koh Bida Nai is a small rocky island in the Phi Phi Islands area, formed by limestone cliffs and known for a rich variety of marine life. The dive begins in shallow water and continues down along the island’s structure. Depths start around 5 m and extend to 30 m and beyond, offering a range from easy shallow exploration to deeper sections for experienced divers.

Planning details

Reported depth and seasonality.

Reported depth

5m - 30m

Depth note

Depth starts at 5 m and goes to 30 m+.

Safety & access

Hazards, restrictions, and required precautions.

Hazards

Dangerous wildlife

Safety notes

Deeper sections exceed 30 m; plan gas and depth limits accordingly. Blacktip reef sharks may be encountered.

Local intel

Community notes to help plan your visit.

Tailored notes for different activities.

Scuba

A shallow start around 5 m with depth increasing to 30 m+ allows both reef cruising and deeper profiles.

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Dive Conditions Planner

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Spots Near Koh Bida Nai

📍 2.6 km

Pileh Wall 2

⚓

Pileh Wall 2 is a vibrant wall dive featuring a steep drop-off down to around 20 m. The site is known for its colorful soft corals and gorgonian fans, creating a bright reefscape along the wall. Divers can expect abundant reef fish and may encounter blacktip reef sharks in the shallower areas, along with moray eels and occasional turtles. It is described as suitable for divers of all levels.

📍 3.2 km

Turtle Rock

⚓

Turtle Rock lies west of Phi Phi Lee Island and is dived at roughly 10–20 m. The site features a wall with bubble corals where sea turtles are seen feeding. Along the sandy bottom divers may spot stingrays, leopard sharks, and mantis shrimps. The northern area includes swim-throughs and coral bommies to explore.

📍 3.3 km

Palong Wall

Not Set

Palong Wall is a wall-diving site featuring dramatic underwater cliffs with sloping reef sections. The terrain includes small caverns and swim-throughs that add variety to the dive. Depths reach about 18 m and currents are typically mild, making it suitable for a wide range of diver experience levels.

📍 7.4 km

Koh Phi Phi

Not Set

Koh Phi Phi is described as a scuba diving destination known for clear water, vibrant coral reefs, and a variety of dive sites suited to different experience levels. Marine life highlights mentioned include reef sharks, sea turtles, and manta rays alongside healthy reef scenery.

📍 8.8 km

Ton Sai Beach

🏖️

A sheltered bay area used for confined-water training, set up with a buoy-lined section designed to keep beginner divers separated from nearby boat traffic. It’s described as an ideal place to start underwater training. The site is shallow and sandy with small reef fish commonly seen in the area.

📍 11.6 km

Ao Nui

⚓

Ao Nui is a reef dive with a sloping profile over a rocky bottom and a small wall section. Depths reach roughly 20–25 m. Visibility is generally good and currents are usually mild, making it approachable across a wide range of experience levels.

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Frequently Asked Questions

What's the best entry point at Koh Bida Nai?

Entry at Koh Bida Nai is detailed in the spot description above. Look for specific landmarks, access paths, and any tide or condition requirements. Local divers often share updated entry tips in their dive logs.

What conditions are best for diving Koh Bida Nai?

Optimal conditions at Koh Bida Nai depend on several factors including tide, wind, and season. Check recent dive logs for current condition reports and patterns. Generally, calmer seas and high tide provide better visibility and easier entry.

What is the maximum depth and typical visibility at Koh Bida Nai?

Depth and visibility information for Koh Bida Nai can be found in the spot details and recent dive logs. Conditions can vary significantly based on weather, tide, and season. Always plan your dive according to current conditions and your certification level.

Are there any safety considerations or local etiquette at Koh Bida Nai?

When diving Koh Bida Nai, respect local regulations, marine life, and other water users. Be aware of any specific hazards like currents or boat traffic mentioned in the spot description. Follow Leave No Trace principles and local diving etiquette.