Koh Bida Nai

Diving Koh Bida Nai

Lying just to the north of Koh Bida Nok is the little sister, Koh Bida Nai. Another favourite of divers visiting the area, Ko Bida Nai is a limestone cliff islet with similar topography to it's larger neighbour and hosting equally diverse marine life.

Divers often descend into the shallow bay to the east of the island onto the sloping reef and coral encrusted boulder formations which lead past many coral bommies covered with anemones to the first of several swim-throughs.

Created by a huge slice of fallen cliff-face many thousands of years ago, this large gap in the rock is not immediately obvious unless you knew it was there.

Often filled with thousands of tiny glass fish that disperse as you begin your swim-through, keep a close eye on the rock walls for colourful nudibranchs and take care with your buoyancy as scorpion fish may also be found on the bottom.

Exiting the swim though and heading towards the left brings divers to Fantasy Reef, covered in barrel sponges, whip corals, gorgonian sea fans and a huge variety of marine life. Schools of jackfish and trevally are often found hunting on bait balls of younger fish above the reef.

After Fantasy Reef, further back up on the shallower parts of the reef to the north are found several very large rocks with the second swim-through and a long sloping reef which continues to the north west of Bida Nai where it becomes a wall around the top of the island, connecting back with the original entry point.

The dive site of Koh Bida Nai is often combined with Bida Nok or Hin Bida.

Dive Site Guide : Koh Bida Nai

Visibility:	10m - 25m +
Level of Diving:	All Levels
Snorkeling:	Yes
Depth:	0m - 30m +
Journey Time:	35 - 45 mins

Find out more at the Thai Department of National Parks.

• 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.

• 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.

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