Similans & Surin Marine Parks, Richelieu Rock (2025-26)

Join in one of our 4 days or more trips to visit world-class dive sites including the Similan Islands, Richelieu Rock and Surin Islands throughout the dive season starting on 15 October to 15 May.

Facility and service on all of our recommended boats are up to western standard including air-con cabins, western toilets, hot shower and Thai & Western meals during your trip.

All boats schedule up to 4 dives per day. Depths range from 15m (60ft) to 40m+ (120ft) and current can be very strong at some sites. Advanced or higher level of certification and 30+ logged dives experience is highly recommended to enjoy all the dives.

Our Top Reviewed Trips (lowest carbon footprint) Prices & Options

Similans, Surin, Koh Bon, Tachai & Richelieu Rock (MV Explorer) 5 Days / 5 Nights, 16 Dives, price from: 29,600 THB (Twin/Double Cabin, upper deck) or 30,600 THB (Twin/Double Cabin, lower deck)

Similans, Surin, Koh Bon, Tachai & Richelieu Rock (MV Andaman) 7 Days / 7 Nights, 22 Dives, price from: 34,000 THB (Single bed, Bunk-beds Cabin) or 37,500 THB (double cabin) or 39,250 THB (Double cabin ensuite). Max guests on board: 20 diver

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Superior Boat Options (price per diver)

The trip includes 15 dives, all meals, beautiful twin and double cabins, price per certified diver is 32,000 THB. See the boat, click here

Important Note: prices excluding Marine Park fees (500 THB entry & 200 THB daily for diver per Marine Park) and equipment rental. Government fees are subject to change without notice.

 

Equipment Rental Set

Click to view Equipment Rental List

• Dive Computer Rental: 300 THB/day; 
• BCD Rental: 200 THB/day,
• Regulator Rental: 200 THB/day,
• , Underwater light: 200 THB/day.

• Open heel fins (without boots): 150 THB/day,
• Mask & fins (full-foot): 150 THB/day,
• Shortie Wetsuit (2mm, size: Junior, XXS-XXXL): 100 THB/day

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Destinations

Similan Islands 

Lying north to south approximately 100km north of Phuket, consist of 9 islands and surrounding dive sites. On the east sides are beautiful white powder-sand slopes dramatically dropping from the beaches, some up to 30 meters or deeper, some covered with massive healthy coral reefs.

Since the Similan  Islands are one of Thailand’s National Parks, marine life are well protected and boast great variety. Some of them are very unique which can be sighted only in the area, very different from the other side of Malay Peninsula or Pacific Ocean. Try to count how many kinds of butterfly fish you can spot in one dive and meet various cousins of Nemo. Leopard Sharks and reef sharks, great barracudas are commonly seen in the morning dives and colorful reef fish, small stuff and occasional Napoleons are dwellers in the afternoon dive sites.

• Visibility: 20-40 meters+
• Depth: 5-40 meters
• Current: mild – very strong
• Diver Level: advanced and above, limited dive sites suitable for beginner level.

Koh Bon

Koh Bon is known for Manta Rays encounter, where you might spend most of your bottom time with multiple mantas. The island also offers a great wall dive where leopard sharks, Guitar rays and nurse sharks are possible sightings. Koh Bon’s West Ridge is one of the few sites in the region where it dramatically drops down to 30 meters+ in depth.

• Visibility: 15-30 meters+
• Depth: 10-35+ meters
• Current: mild – strong
• Diver Level: advanced and above, suitable for beginner only in the Bay.

Marine Park Fees & Safety Regulation

Similans and Surin Marine Parks regulation requires all scuba divers to have proof of certification by an ISO recognized training organization (PADI, SDI, NAUI, SSI etc.) equivalent to Advanced Open Water Level, with deep diving experience to 30m, log recent open water dive within 6 months and carry valid travel or diving insurance with coverage for recreational scuba diving. Dive computer is required for all scuba divers on our liveaboard trip.

Similans Marine Park Rules Change since 2018

Limited ticket allocation (525 divers per day at all 9 islands). With immediate effect all customers must be allocated a ‘ticket’ for entry into the Similans prior to departure. Numbers have been restricted to first come first serve, ticket is non-refundable. The passport number of all customers must be supplied to support all ticket applications.

National park fees must now be paid in advance with your booking. Should you cancel, these fees will not be refundable by the Marine Park. Ticket is not exchangeable nor transferrable. Passport number Date of birth, full name and nationality are required in all bookings for tickets.

Marine Park Entrance fee (daily): 500 THB per entry and 200 THB/diver. Richelieu Rock Fee: 600 THB/visitor. (Important note: government regulation and fees are subject to change without any notice. We do not have any control of these regulations)

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