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This extremely popular tour, in a one-day package, is designed to see the four most famous islands of the Trang Province at Sea. Arrive at Ko Chuek, snorkel among colorful, soft, living corals. Visit Ko Mook, swim through the darkness and experience a uniquely different world of Emerald Cave. Departure to Ko Kradan and enjoy lunch, free time for relaxing and sunbathing on the beach. Leave to snorkeling at the last point at Ko Ngai.
Service animals allowed
Public transportation options are available nearby
Infants are required to sit on an adult’s lap
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
For a full refund, cancel at least 24 hours before the scheduled departure time.
Lunch
Use of Snorkelling equipment
Restroom on board
Gratuties.
National Park Fee (400 Bath (adult) / 200 Bath (child))
Select a pickup point
Saladan Pier
The car will pick you up from the resort to Saladan Pier and the guide will ask you to sign a tourist insurance. Then take you on the boat. Depart from Saladan Pier to Koh Chuek.
Morakot Cave (Emerald Cave)
Visit Koh Mook, float into The Emerald Cave for relax and enjoy the inside hall
Pickup included
14 reviews
Total reviews and rating from Viator & Tripadvisor
Erica P,
Apr 12, 2025
- Review from Viator
Fantastic day out! Highly recommend. The timing of the rides resulted in a change of island rotation but we still went to all the islands just in a slightly different order. My two children went on the tour and the only thing I will say is going through the cave was chaos. My kids decided against going despite being strong swimmers and honestly it was for the best. Tons of tour groups going in and out of the cave at any one time and the strong waves going through the cave means you get pushed around a lot. There were kids from our group who went through and were fine but the parents were panicking during that part. Food was great! Kids had 2nd helpings. Our guide, Mon, was hilarious and was constantly taking photos for the group. Would recommend taking sea sickness tablets before starting if you tend to get any motion or sea sickness. I was passing around the ones I brought like candy to the other participants.
Bec W,
Feb 15, 2025
- Review from Viator
Fantastic day thanks. A great balance of activity, food & sight seeing. Staff were lovely, friendly & helpful. Highly recommend.
Tracey H,
Dec 29, 2024
- Review from Viator
It was a great experience taking this tour. The staff were very respectful, supportive and with a good mix of humour. I enjoyed the stops for a chance to swim and throughly enjoyed the snorkelling. The crew provided a delicious traitional lunch. The other people on the tour were a great bunch of people and made the day even more enjoyable. My favourite stop and experience was swimming through the Emerald cave to a beautiful beach. I highy recommend this tour.
ToC U,
Dec 27, 2024
- Review from Tripadvisor
The “Four Islands Tour” by Opal Travel delivered an excellent experience! Remarkably, we managed to visit some spots almost entirely on our own, thanks to great timing. The food was tasty, the guide was skilled, and the boat wasn’t crowded, which made the trip even more enjoyable. The chef donned a chef’s hat at Koh Kradan and a headlamp at the Emerald Cave, showcasing versatility and humor. This tour is a great alternative for a day trip—safe, well-organized, and highly recommended! We did 3 dives and could’ve done more.
Tenna Q,
Mar 23, 2024
- Review from Viator
Our tourguide Jessica, was absolutely amasing! Sweet, professional and with Lotus of knowledge of the areas we visited. My kids (6, 12 og 14 yo.) felt safe all the time. And we’ve had a eksperience of our life, togethers. Comfort, safety, food, water, taxaservice: everything Worked out as planned, and as I’ve had hoped. And even Better. BIG THANKS to the Crew!!!




Yvonne G,
Jan 24, 2024
- Review from Viator
Guide Wut and his crew were great. Very well organised tour, we were picked up from our hotel on time, everything at the pier was well organised, we were put into different groups depending on the tour we were doing and then boarded the boat. Wut gave a lot of information about landmarks and the places we visited. The swim through Emerald Cave was a highlight with the crew doing the swim with us with a torch and taking photos with our phones for us. Buffet lunch was really tasty and plentiful, snorkelling gear provided and plenty of time at each stop to snorkel or swim. I highly recommend this tour if you have a day to spare on Ko Lanta.
914claesh,
Jan 3, 2024
- Review from Tripadvisor
Very nice daytrip to for fantastic places. Snorkling was great at the first stop. Second stop Emerald cave where we swam thru a dark passage but the guides had torch to show and led us the way. At the third place we had a very nice lunch and fresh fruit on a beatiful beach. Ladt stop on another fantastic beach where you could buy cold beverage. Ice cold water was also supplied on the boat thruout the day. Really nice and helpful crew! Highly recommended and really worth the money!
Stewart N,
Dec 24, 2023
- Review from Tripadvisor
Great trip. Picked up on time. Staff friendly and helpful. Boat decent, comfortable, not overloaded and with sufficient lifejackets. The captain was conscientious of other water users and the operation as a whole was well controlled. The islands were lovely, varied, and well worth visiting and the route we took circumnavigated Koh Lanta itself. Cave and snorkelling were highlights for us. The buffet lunch was nice (thai food - mild curry, rice, veg, fruit, fried chicken wings, cans of coke). Free bottles of water available all the time. All in all, a great day. Note that there are bathroom facilities on the two beach islands, on the boat and at the Koh Lanta dock.
Robin D,
Dec 6, 2023
- Review from Viator
We had a really nice experience with the 4 island tour, we have seen some amazing places. The food was really nice, the guide and people frome the boot were friendly and helpful. We recommend this tour to everyone staying at koh Lanta.
yvonnefB8378PG,
Nov 11, 2023
- Review from Tripadvisor
We had an amazing day by speed boat with ample time for swimming and snorkelling. Lunch and refreshments were enjoyed by all, Emerald Cave was amazing and we were lucky enough to not have too many people present during our visit. This is a must do activity as a family with children (our children are 11 & 14 yrs).


Operated by Opal Travel Speed Boat