Available languages
8 hours 30 minutes
Mobile ticket
The 100 Degrees East Marine Team's signature tour to the Angthong National Marine Park tour presents an exciting alternative for guests who prefer to avoid the crowds in safely and comfort, seeking a little more exclusivity in their choice of excursion. We guarantee a maximum of only 12 adults on our tour or 14 guests when children aged 4 - 12 years are on board. With a high ratio of crew to guests our English-speaking guides provide a very personalised experience. Our caring and knowledgeable guides accompany you as you snorkel, kayak and make your way to the famous Emerald Lagoon. Your day can be as active as you wish or spent dozing off under the shade of the trees. Everything is included in the price of the tour, no additional fees or charges. For groups larger than 4 please contact us to check our availability.
Not recommended for travelers with spinal injuries
Not recommended for pregnant travelers
Not recommended for travelers with poor cardiovascular health
Travelers should have at least a moderate level of physical fitness
Minimum number of guests required. We will notify you by 4.00 PM a day prior to your tour, if we didn't reach minimum guests required to operate. You will have the option to cancel your reservation or change to the next available tour.
Bookings for groups of 5 or more travellers must be made directly, we can not guarantee that separate bookings made for the same group will be scheduled on the same boat.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Ko Samui
Start the day cruising past the northern coast of Samui en route to the Angthong National Marine Park..
Upon arrival at Koh Wao our team will select the best location for snorkelling to ensure a safe and fun experience. After a briefing the guides will join you in the water to provide assistance and lead the way as you explore. We provide personalized service that makes this suitable for all ages and abilities, from experienced snorkelers to non-swimmers. All snorkel equipment is provided, including fins which make navigating the reef much easier! Lifejackets and life rings are available, our guide can also act as your in-water taxi service!
Life jackets
Soda/Pop
Bottled water
Lunch
Towels
Use of Snorkelling equipment
All Fees and Taxes
Kayaking
Restroom on board
Seasonal fruit
Full insurance coverage
Transfer to and from accommodation
Select a pickup point
Pickup included
805 reviews
Total reviews and rating from Viator & Tripadvisor
ClaireArm,Apr 4, 2026
- Review from Tripadvisor
We booked this trip because of its fantastic reviews and we were not let down. A very comfortable and fast speedboat with a great crew, Loon was the lead and he spent so much time with us pointing out things along the way and telling us about the area. The crew were very experienced, informed, fun, and looked after us all day. The snorkelling was very good, lots to see in the water. We kayaked and climbed the steps to see the emerald lake. The crew took lots of photos and videos for us. They provided a good lunch and lay out mats for us on the beach. They also kept us hydrated with water and soft drinks, and freshly cut fruit. We also went to another beautiful beach at the end of the tour where we saw monkeys and could swim in the sea. A very professional team made this day for us! Thank you!



EmmiL87,Apr 4, 2026
- Review from Tripadvisor
It was an excellent experience! We are so glad we went to it. It is more expensive than the others might be, but it really is worth the money. The marine team was great and professional and they looked after us the whole day. They served cold water, soft drinks, electrolytes, fruits and of course thai lunch. They tried to avoid places of full of tourists and they succeed in it. Beautiful beaches, amazing marine life! It was our first time snorkeling and definitely not the last! You got all the support you needed for an amateur.


Makenzie R,Apr 2, 2026
- Review from Tripadvisor
This was such an awesome experience. The snorkeling was beautiful, we saw so many fish. We also went to a few beautiful beaches. The marine crew was FANTASTIC. They made the experience so much fun and enjoyable.



Brendan J,Apr 1, 2026
- Review from Tripadvisor
My partner and I joined the Ang Thong trip and had a great experience from start to finish. The group was small, with plenty of crew on hand, which made the whole day feel relaxed and well looked after. I did a dive with Mr Roon, while my partner joined the guided snorkel tour. Both were excellent. The equipment was new, everything was well maintained, and the team clearly knew their stuff. After that, we cruised around the rock outcrops of the national park before stopping at a quiet, secluded beach for lunch. The food was simple but really good. Curry, rice, chicken and fresh salads. The afternoon included a canoe trip and a walk up to the Emerald Lake. The climb is steep, but manageable if you take your time, and the view at the top makes it worth it. The crew even carry water up and take some genuinely great photos along the way. Overall, it was a fantastic day and an easy recommendation. Thanks to Cara, Roon and the team for such a memorable experience.








saraphoto,Mar 31, 2026
- Review from Tripadvisor
Wow This was so well planned, the staff was kind and thoughtful, and the activities perfect for a full day group excusrsion.



Hristiana R,Mar 31, 2026
- Review from Viator
All was great - well organized, plenty of time at each stop, the team on the boat took great care of us, lunch was delicious, stops were great and on less busy spots/beaches which we really enjoyed. There were plenty of stops for breaks and we didn’t feel overly tired after the trip. During snorkeling we were split in smaller groups (4 people in each) and toured around by the guide. The guides were great in explaining interesting facts about the marine park. They took amazing photos and videos for us. The sea was choppy on the way back but boat captain was extremely skilled so we had a smooth ride. We recommend this trip. It is worth the premium price if you want to enjoy the islands with a premium experience and without being squeezed on a boat or herded around with 40 other people.
aprilpeterson22,Mar 31, 2026
- Review from Tripadvisor
The crew was great and the activities - snorkeling, kayaking and hiking were are great. The beaches were stunning. The hike is a little workout so come prepared with the proper footwear. The crew were so attentive and very friendly.




Samantha R,Mar 29, 2026
- Review from Viator
My husband and I are so glad we booked this tour during our honeymoon trip to Koh Samui! While the price might be a bit higher than some other larger group options booking the small group tour through this company is definitely worth it! The staff were incredible all day. There were only about 10-12 people travelers in our group and we still had 6 or 7 staff to support us. The team also did amazing job of pacing out the day so that we avoided crowds at popular spots (like the lagoon) and never felt too tired. Highlights for us included the kayaking, our relaxing beach side lunch, and the time we had to relax on the sandbars with stunning views of the park's islands. Would definitely recommend!
D6074XTdebbieb,Mar 28, 2026
- Review from Tripadvisor
We enjoyed all aspects of our trip: boat, snorkelling, kayaking, lunch/provisions, sightseeing and swimming. The crew was professional and first rate. They almost trip over themselves to assist you in anyway possible. A small tour group enabled servicing individual needs, ability levels and developing comradery. There was also no alcohol on the boat. This was not a booze cruise which we have unfortunately experienced in the past. Liquor is not required to have a good time.
Russell t,Mar 28, 2026
- Review from Viator
Excellent from start to finish , the staff make this trip, they couldn't do enough to help , snorkeling in small groups of 4 with a guide is brilliant, the islands were amazing and lunch was one of the best and we've done many trips in Thailand. Please pay the extra its worth it for a boat with 12 guests and 5 staff so we were very well looked after. The extra cost is Bourne out in the above and beyond service you receive from pick up to drop off on the beach out the front of the hotel.
Operated by 100 Degrees East Dive Team