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Koh Lanta Diving

The Perfect Dive Trip

Avoid The Crowds: Small Groups, Great Personal Service

Koh Lanta diving trips in small groups with a focus on great personal service, safety and fun.

Join our high-season dive trips from Koh Lanta to some of the most spectacular islands, coral reefs and best dive sites in Thailand.

Koh Lanta Diving with Dive & Relax

Departing from the beach each morning at 9 am, our speed boats carry a maximum of 10 diving guests, plus our super dive team to some of Koh Lanta's best dive sites.

Enjoy our 5-star service and let some of the most experienced, friendly and professional dive instructors on Koh Lanta take care of you while you just sit back, dive and relax...

Save Valuable Holiday Time

Sleep late and take advantage of a 9 am beach departure, short journey times, and an early afternoon return to Koh Lanta with plenty of time to explore the island or relax on the beach after diving.

Most dive boats depart from the piers in Saladan village on the north of the island at 8 am. Unlike the other dive operators, however our boats depart from the south end of Long Beach.

Koh Lanta Island Guide

We're much closer to most of the dive sites than any other dive shop here on Lanta, including Koh Haa, Koh Rok, and Hin Daeng & Hin Muang.

Journey times to Koh Haa are just 30 minutes from our dive shop @ Lanta Castaway Beach Resort, and as little as 60 - 70 minutes to Hin Daeng & Hin Muang, depending on sea conditions.

If you have any questions about diving from Koh Lanta, please email us at info@diveandrelax.com and we'd love to help you plan a trip to our wonderful island.

More time diving & relaxing, less time travelling to and from the dive sites each day...

Koh Lanta Diving: Wonderful Marine Life

Koh Lanta is a scuba diving paradise, home to some of Thailand's most spectacular islands, healthy coral reefs, and a huge diversity of marine life.

Our diving is easy and relaxed, with relatively shallow reefs, sheltered lagoons, walls, and gentle drop-offs.

You'll also find many of Thailand's best dive sites in the Koh Lanta Marine Park, including the Koh Haa Islands, the Koh Rok Islands, and the famous Hin Daeng & Hin Muang.

Leopard (Zebra) Shark (Stegostoma fasciatum)

Our Koh Lanta Marine Life Guide contains photos and descriptions of hundreds of species of fish, corals, and other amazing creatures we've spotted at our dive sites.

After returning from a trip, our dive staff love to spend time with our guests, logging the dives and sharing our knowledge of the wonderful marine life at the dive sites around Koh Lanta.

Our dive trips are the perfect way to explore some of the 52 islands that make up the Mu Koh Lanta Marine National Park.

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

Koh Lanta Diving: Scuba Skills Refresh

We understand that those who have not dived for a while might feel a little anxious about getting back into the water.

Even for those who are more confident divers, if you've not been diving for a while, you'll enjoy improved buoyancy, air consumption, and confidence in the water after a Scuba Skills Refresher on Koh Lanta with our experienced dive staff.

Diving @ Koh Haa with Dive & Relax

We conduct the scuba skills refresher at the beginning of the first dive to help ease you back into the water.

We'll also include a quick theory review and extended dive briefing to make everything as smooth as possible, and ensure that you have the best possible dives around Koh Lanta.

For those who have not dived in a long time, or who are feeling less confident in the water, we can provide a full scuba skills review in confined water the day before diving from the boat.

Diving with Nitrox

For Enriched Air certified divers, we have 32% Nitrox available at 250 Baht per tank during the high-season here on Koh Lanta.

If you're not already a Nitrox certified diver, it's really easy to add the Enriched Air Nitrox course here on Lanta to a 2 tank dive trip while you're diving with us.

Koh Lanta Diving: Advanced Course

If you're already Open Water Certified (or equivalent BSAC, SSAC, CMAS, etc.) and plan scuba diving to Koh Lanta for at least 3 days then you can also take your scuba skills and knowledge to the next level with the SSI Advanced Adventurer or the PADI Advanced Open Water Diver course at the same time.

Diving @ HTMS Kledkaeo Wreck with Dive & Relax

Include 5 Adventure Dives over 3 days of diving, diving deeper, learning how to navigate unknown dive sites, improving your buoyancy, and expanding your knowledge of the amazing underwater world.

Koh Lanta Diving: Online Booking

We offer a 10% discount on all dive trip bookings confirmed with a deposit before you arrive on Koh Lanta, at least 7 days in advance of a trip.

Once you arrive on Lanta, we ask that you check in with us at our dive shop at Lanta Castaway Beach Resort the day before your first dives. Please check in with us before 4:30pm to complete the paperwork, check diving certifications, gear sizes, etc., and confirm arrangements for the following day.

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

Find out how to get to Koh Lanta from Krabi, Ao Nang, Koh Jum, Phi Phi, Phuket, or Koh Lipe.

Already Here on Koh Lanta?

If you're already here on Lanta then dive trip bookings can be made in person at our dive shop in Castaway Resort (south end of Long Beach, about 100m from the 7-Eleven) between 10 am and 4:30 pm.

You can find our dive shop @ Lanta Castaway Beach Resort, located at the southern end of Long Beach.

We need to see all divers at our dive shop at the time of booking to complete the paperwork, check dive certifications, check equipment sizes, receive the deposit, etc.

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