Scuba diving in Koh Bida Nai

From Boat
Diver level
Average: 32.8 ft
Maximum: 82 ft
Slight, but there is a possibility of strong currents.
Average: 32.8 ft
Maximum: 98.4 ft
Koh Bida Nai is a small island, located 2km south of Koh Phi Phi Ley. This site features walls, caves, boulders and fallen rocks that create some interesting swimthroughs hidden behind large shoals of glassfish. Divers can choose to explore Fantasy reef, located on the south-east side of the island (18-27m/59-88ft deep) or visit another shallow sloping reef on the east side, ideal for novice divers (depth 12m/39ft). Good buoyancy control is important as bearded lionfish are lurking on the bottom.

When to go

The best time to dive is from November to May, though diving is possible all year round. The air temperature ranges from 25C/77F to 32C/90F and water temperature is about 29C/84F all year round.

What to see

Some areas on the west side of the island and on the north and north-east side feature lots of small reef fish, including many nudibranchs, seahorses, ghost pipefish, shrimp and other species. Various schools of large predator fish, like blacktip reef sharks and leopard sharks, barracudas and trevallies can be seen hunting near the reef wall. Varying sizes and species of colorful parrotfish and wrasse, along with large shoals of moorish Idols are expected to be seen to be at all depths. Also divers can explore many gorgonian sea fans, whip corals and colorful soft corals.

Reachable from

Krabi, Koh Phi Phi Don

Liveaboards with trips to Koh Bida Nai

Dive center`s Special Offers

  • Koh Lanta Anti Gravity Divers - Koh Lanta

    5 Days Diving Package

    5 days diving package. This product is for certified divers only
  • Phuket No Gravity Dive Center

    Boat Trip to Phi Phi Islands

    Boat trip to Phi Phi Islands. This trip includes two dives at Phi Phi Islands and one dive on the way back to Phuket at Shark Point, Anemone Reef or Koh Doc Mai. The Phi Phi Islands lay about 45km East of Phuket. It takes about two and half hours by the dive boat to get to Phi Phi Islands. The exotic scenery with a huge variety of reef life makes it one of the best scuba diving destination in Phuket. There are several dive sites around Phi Phi offering amazing fun dives for divers of all certification levels. The best sites are Koh Bida Nok, Koh Bida Nai and along the wall of Phi Phi Ley Island. Vertical walls covered with soft corals, sloping hard coral reefs, caverns and swim-throughs highlight the underwater landscape. About the marine life: tiger tail seahorse, ghost pipe fish, frog fish, shrimps, nudibranches in the cracks of the limestone. Massive schools of fish (barracudas, tunas, jacks, snappers) in the blue. It is easy to find black tip reef sharks, leopard sharks, turtles on any dive site around. Occasionally whale sharks hang around the islands, too!
  • Krabi Scuba Addicts

    Boat Trip to The Phi Phi Islands National Park (2 Dives)

    Comprising of a number of islands about 2 – 2.5 hours away from Ao Nang by our diving dayboat. These islands form the Phi Phi National Park and contain a multitude of popular dive sites. Only the largest island Phi Phi Don is inhabited, the remaining islands are all impressive limestone cliffs rising out of the clear, turquoise waters. The beach at Maya Bay on the second largest island of Phi Phi Leh, was the setting for the Leonardo Di-Caprio movie ‘The Beach’ and as a result attracts hordes of camera happy travellers. On the East side of Phi Phi Don, you can visit the Viking Cave’ , which contains cave drawings made by generations of native fishermen to bring them good luck. It is also the place to witness locals climbing hundreds of feet up vines and rickety bamboo ladders in order to harvest swallows nests, an expensive delicacy bound for the Chinese market. The many dive sites of the Phi Phi islands offer something for all divers with gentle sloping reefs, deep pinnacles, wall drift diving, swim-throughs and some small caves. Depths range from 5-25m and visibility is consistently above 10m, and very often 25m plus.
  • Koh Lanta Anti Gravity Divers - Koh Lanta

    10 Days Dives Package

    10 days diving package. This product is for certified divers only
  • Koh Lanta OK Club Diving Center

    3 Days Diving Package (2 Local Sites)

    Daily diving. This product is for certified divers only

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