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Dive Koh Bida Nok

Mu Ko Phi Phi National Park

Diving Koh Bida Nok

Koh Bida Nok is furthest south island in the Phi Phi archipelago, a favourite dive and snorkeling spot for many visiting Koh Phi Phi.

The northern part of this limestone island drops down to around 32m - 35m, offering great wall diving on both sides of the island as you move further south, where the reef becomes more shallow, eventually finishing in the small lagoon at the southern tip of Koh Bida Nok.

Diving @ Koh Bida with Dive & Relax

The eastern side of Bida Nok is often bathed in sunlight, and as you move south, the wall become less steep and the corals more abundant.

Giant moray eels, turtles, lionfish, schools of snapper, hunting jackfish, nudibranchs, sweetlips, barracuda and sea snakes are often spotted on the north eastern part of this dive site.

As you come between Koh Bida Nok and Koh Bida Nai, the coral bommies stretch out into the blue, almost connecting the 2 islands, and it is here that zebra sharks and stingrays are often found in the sand.

Diving @ Koh Bida with Dive & Relax

The west wall of the island runs deeper than the east side, with fantastic walls, and large coral outcrops lying just a 10 - 15m from the wall in deeper water down to 30m where you can sometimes spot nurse sharks and bamboo sharks hiding under the corals.

When the visibility is good, the deeper, west side of the island is easily the best dive site around Phi Phi, with some world-class reef and marine life areas.

It's not unheard of to spot manta rays and whale sharks cruising past on the western wall of Bida Nok, and the shallows are home to blacktip reef sharks and octopus.

The colourful lagoon rises from 14m into the shallows, where juvenile black-tip reef sharks are often found in the shallows, together with soldier and damselfish, parrot fish, butterfly fish, colourful wrasse and crocodile needlefish patrolling the shallows.

Diving @ Koh Bida with Dive & Relax

There is also a cave on the northern part of Koh Bida Nok, however we strongly recommend that you do not enter this narrow passage without the proper training in cave diving techniques, accompanied by experienced professionals.

Koh Bida Nok is often combined with diving at Bida Nai or Hin Bida.

Find out more from the Thailand Department of National Parks on the Mu Koh Phi Phi Marine National Park.

Book online to save 10% on dive trips and scuba courses on Koh Lanta.

Dive Site Guide : Koh Bida Nok
Visibility: 10m - 30m +
Level of Diving: All Levels
Snorkeling: Yes
Depth: 0m - 35m +
Journey Time: 35 - 45 mins
Koh Bida Nok Dive Site Map
Koh Lanta Dive Sites

Find out more at the Thai Department of National Parks.

Certified Diver Prices Online Price Walk-In Price
Koh Haa / Koh Rok(all levels of diving) ฿3,150 ฿3,500
Koh Bida / Koh Phi Phi(all levels of diving) ฿3,150 ฿3,500
Hin Daeng & Hin Muang(experienced divers only) ฿3,950 ฿4,300
Shark Point & Anemone Reef(experienced divers only) ฿3,950 ฿4,300
  • Minimum Open Water Diver, or equivalent.
  • All trips are 2-tank dives. Includes free equipment rental, lunch & soft drinks on the boat.
  • Scuba Skills Refresher for extra ฿900 when Booked Online (Normal Price ฿1,000)
  • Does not include Marine Park Diving Fee: Adult ฿600, Child: ฿400 per day.

Our Boat Trip Schedule

Our dive trips depart Koh Lanta in the morning every day from the south end of Long Beach, returning to Koh Lanta around 1:30 - 2pm, depending on how the day goes.

Week Day Boat 1 Boat 2
Monday Koh Rok Islands Koh Rok Islands
Tuesday Koh Haa Islands Hin Daeng & Hin Muang
Wednesday Koh Bida / Phi Phi Koh Bida / Phi Phi
Thursday Koh Haa Islands Koh Haa Islands
Friday Koh Haa Islands Hin Daeng & Hin Muang
Saturday Koh Bida / Phi Phi Koh Bida / Phi Phi
Sunday Koh Haa Islands Koh Haa Islands
  • All trips are 2 dives a day
  • Trips depart from the beach at our dive shop @ Lanta Castaway Beach Resort
  • Trips Depart 8/9am, return 2pm
  • Dive & Relax is open from Oct 15 - May 15.
  • E-mail us info@diveandrelax.com in advance with any questions, or to make a booking.

We may schedule a Shark Point & Anemone Reef dive trip or a KledKaeo Wreck dive trip upon request. A minimum of 5 divers are required for these trips, please let us know if you are interested.

We love to dive as much as possible during the high season, however all our dive trips depend on the weather, sea conditions, currents and minimum numbers and may be subject to change at short notice.

Book online to save 10% on dive trips and scuba courses on Koh Lanta.

For more information on our weather and climate, check out the best time to visit Koh Lanta.


Dive Trips & Scuba Courses

Send us an email and we'll get back to you as soon as possible.

  • Please let us know:

    • when will you arrive on Koh Lanta?
    • your previous dive experience?
    • which diving activities you are interesed in?
  • If you're already here on Lanta, you can call or WhatsApp +66 (0)89 050 3009