Surin Islands, Richelieu Rock, Koh Bon, Koh Tachai... Dive the Best of Thailand

Why we love it

The Surin Islands, north west of Thailand host some of the best dive sites in the world. Diving Richelieu Rock, its most famous site, feels like being in a big aquarium filled with lots of tropical fish. Keep your eyes open as while we were diving there, we almost missed a whaleshark because we were just too busy looking at some macro! Big and small you have it all. A perfect dive trip for people who just have a few days, with lots of action and amazing crew.


The dive center is part of Longitude 181 that promotes responsible scuba diving.

Who is it for?

For both new and advanced divers who like variety. Drift dives, night, deep and shallower dives. Other activities: kayak, islands exploration, eating great food on board, chill out in between dives!

Prices and Dates

What’s included?

  • 11 dives
  • 4 days / 3 nights in a shared cabin
  • All meals (Breakfast, Lunch, afternoon bites, Dinner), soft drinks, drinking water, filter coffee & tea
  • Fresh fruits, yoghurt & snacks
  • 12 Liter Alum. Cylinders, Weights & Weight Belt
  • PADI Professional Dive Guide
  • Towel, shower gel
  • Sea kayak and hamac

What’s not included?

  • Marine park fee: 1600 THB (about 42 euros - subject to change)
  • Personal insurance
  • Alcoholic drinks and cigarettes
  • Equipment rental (500THB/ day)
  • Computer (300THB/day) or camera (400THB/day) rental
  • PADI Continuing Education Courses
  • 12 Liter Cylinders fill up with Nitrox (250THB/ tank or 3400 for all)
  • Transfers to and from Ranong (on request)

Dive briefing!

Marine life

  • A National Park since 1981, they are famous for excellent diving, with the greatest hard coral diversity in Thailand.
  • Richelieu Rock, a limestone pinnacle carpeted with a thick covering pink and purple corals, is one of the only sites in the world where the whale sharks are encountered on a regular basis.
  • You will find species such as manta rays, leopard sharks, napoleon wrasse, yellow-masked angelfish, bumphead parrotfish, tomato anemonefish, barramundi, trevally, barracuda, tuna, jenkins stingray, turtles.
  • The sites are also good for macro life and you might see some frogfish, ghost pipefish and seahorses.

Dive conditions

  • Season: high Season from December to April.
  • Currents: can be strong in some sites
  • Visibility: 5 to 20 meters
  • Water temperature: 26 to 29 degrees Celsius
  • Depth: both deep and shallower dives

Dive sites

  • The Surin Islands are a series of jungle covered granite outcrops that are ringed with coral reefs to a depth of 25-30 meters.
  • Dive sites: Surin Islands, Richelieu Rock, Koh Bon, Koh Tachai

The Team

  • Operation created in 2012
  • PADI dive team
  • Instruction in French and English. Other languages please ask us!
  • Courses from beginner to divemaster.

Safety information

  • Equipment needed: a dive computer, a safety buoy, a whistle, and the usual diving equipment.
  • Insurance: Both dive insurance and travel insurance are mandatory. We recommend Dive Assure that has plans to cover both - ask us for a quote.
  • Hyperbaric Chamber: Nearest deco chamber is in Phuket

Visa, Flights & more!


  • Your passport needs to be valid for at least 6 months from the date of arrival.
  • As of August 2017, no visa was needed for a stay of less than 30 days for citizens from France, USA, Japan, Canada, UK, Germany, Switzerland, Sweden, Spain and many other countries.
  • Please check visa requirements for Thailand in your own country before traveling.

How to get there?

  • You have to go to Ranong in Thailand. You can take a plane, the train and/or the bus.
  • By plane: an hour and thirty minutes from Bangkok, with NOK AIR (usually 2 flights a day from Bangkok Don Muang Airport - the lowcost airport an hour away from the main airport).
  • By train: from Bangkok to Chumpon followed by a 3 hours bus ride to Ranong.
  • By bus:
    • From Bangkok: both air-conditioned and non air-conditioned buses depart from Bangkok’s Southern Bus Terminal to Ranong every day for the approximately 9-hour trip.
    • From Suratthani: air-conditioned bus twice a day leaving every hour of the day.
    • from Chumphon: air-conditioned bus leaving every hour of the day.
    • from Phuket or Khao Lak: air-conditioned buses run in the day.


  • Bring sunscreen, a hat, mosquito repellent, a rashguard, a sweater or a light weight jacket

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Only Top
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At the
Right Season
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Dive Operators
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Booking Fees
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