Tin Adventure Sea Tour: 4 Islands & Emerald Cave

FromTHB 1,600
7.5 hours
Ko Lanta, Thailand

About this activity

Experience a thrilling sea adventure visiting four picturesque islands and the renowned Emerald Cave, complete with snorkeling and a beachside picnic.

Highlights

  • Explore Koh Mook's Emerald Cave
  • Snorkel in crystal-clear waters
  • Discover Koh Kradan's white sandy beaches
  • Visit Koh Ngai's secluded coves
  • Enjoy a beachside picnic lunch

Full description

Set sail on an unforgettable journey from Koh Lanta to four of Thailand's most enchanting islands. Begin with a speedboat ride to Koh Mook, where you'll navigate through the 80-meter tunnel of the Emerald Cave, leading to a hidden lagoon surrounded by towering limestone cliffs. Next, snorkel in the vibrant coral reefs of Koh Kradan, bask on the pristine beaches of Koh Ngai, and explore the secluded coves of Koh Ma. Throughout the day, enjoy a delicious beachside picnic, making this tour a perfect blend of adventure and relaxation.

Included / Excluded

  • Round-trip speedboat transportation from Koh Lanta
  • Guided tour of four stunning islands
  • Visit to the Emerald Cave (Tham Morakot)
  • Meals and beverages

Itinerary

1

Enjoy a convenient pickup service either by local truck on road from the hotel lobby or directly by speed boat from the hotel beach on Koh Lanta. Meet the friendly and professional crew of Tin Adventure Sea Tour on the boat and get a warm welcome with safety instructions and important information about the tour program. Cruise by comfortable speed boat with 35 limited seats in less than 30 minutes to Koh Mook and anchor in front of the spectacular Emerald Cave - the highlight of the tour. Put your life-jackets on and swim through an 80-meter dark tunnel with headlamps between the group members. Finally, the daylight is started to stream through and you will discover a 360° rainforest wall which is disappearing into the clouds above, protecting a pristine lagoon, hidden within the island. Continue to Koh Kradan and swim in the open water with a shallow coral reef. A buffet lunch of local Thai food is served at the beach on the island. After lunch, you can walk along the beach for a bit, wade into the water, and just take it easy. This beach truly is serene – the water is crystal clear, and the sand is white and fine with seashells as you come closer to the water. The next snorkel stop is at Koh Chuak, a small island with its own charm that actually lies in the sea. Beneath the aquamarine water is a whole new world of colors created by coral reefs, fish and other sea creatures that needs to be explored. The last stop will be on Koh Ngai, also referred to as Koh Hai. It's another island off the coast of Trang without roads and shops at all, only with a couple of resorts, tranquility and a gorgeous beach scenery. This is the perfect place to relax and bring the day to a close before heading back to your hotel on Koh Lanta. Itinerary: • 08:00 - 09:00: Hotel pickup on Koh Lanta • 09:00 - 09:30: Cruise by speed boat to Koh Mook • 09:30 - 10:30: Swim through a dark tunnel to the Emerald Cave • 10:30 - 11:30: Open water snorkeling in front of Koh Kradan • 11:30 - 12:00: Enjoy a Thai buffet lunch on Koh Kradan • 12:00 - 13:00: Relax & sunbath on the beach of Koh Kradan • 13:00 - 14:00: More snorkeling at Koh Chuak • 14:00 - 15:00: Relax, sunbath & walk around Koh Ngai • 15:00 - 15:30: Head back to Koh Lanta • 15:30 - 16:30: Transfer back to the hotel

Duration: 7h 30mAdmission: NOT_APPLICABLE
2

Meet at Saladan Pier on Koh Lanta at 07:50.

Duration: 10 minAdmission: NOT_APPLICABLE
3

-

Duration: 1 hourAdmission: NOT_APPLICABLE
4

-

Duration: 1h 30mAdmission: NOT_APPLICABLE
5

-

Duration: 1 hourAdmission: NOT_APPLICABLE

Meeting point

Start Location

Unknown location

Important information

Know before you book

  • This tour is suitable for all ages and fitness levels.
  • Children must be accompanied by an adult.
  • The tour operates in all weather conditions; cancellations are rare.

Know before you go

  • Bring swimwear, a towel, and sunscreen.
  • Wear comfortable footwear suitable for walking on uneven terrain.
  • Carry a waterproof bag for personal belongings.

Cancellation policy

Free cancellation up to 1 days before the activity starts

For a full refund, cancel at least 24 hours before the scheduled departure time.

Accessibility

  • Infants Required On Laps

Good to know

  • This tour is not recommended for pregnant women, infants under 3 years, people over 70 years or people with back or neck problems.
  • There is a minimum of 15 people required to run this tour!
  • The tour program is subject to change due to weather & sea conditions

Traveler reviews

4.4
74 reviews
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Overall, a good tour. The...

Overall, a good tour. The snorkeling was good, site beautiful. However, they say that the max number in the people boat is 35 but they crammed 40 in our boat and it was uncomfortably overcrowded. Everyone was practically in each other’s laps. As a result, we used a different tour operator for our Phi Phi island tour and found the boat far more comfortable.

Lee_PMar 14, 2026VIATOR

What to do 👍

Very warm welcome and very considerate perfect organization on the other hand we state very numerous for excursions, beautiful discovery of the seabed with different species of fish with a meal on the beach 🏖️, discovery of beautiful islands to do during your stay in Thailand

AudittcamargueFeb 25, 2026TRIPADVISOR

4 Islands tour from Koh lanta

Very good experience with Nun (Leonardo di caprio) and his staff. Due to bad weather conditions, we need to change the orders of the islands and everything was done professionally. Regarding the 4 Islands, it was stunning ! But you will see by yourselves 😁😁😁

Anthony KFeb 18, 2026TRIPADVISOR

Relaxing and fun!

The staff were very kind and professional with attention to safety and fun. The food was really good, and the whole experience felt loving and easy. I definitely would adventure with them again.

Victor HFeb 12, 2026TRIPADVISOR

Fantastic experience. Super cute crew.

A fantastic trip. We were in doubt if it would be too hectic and for the time pressure with many tourists. But it was a super exciting trip. Snorkeling was great both at stop 2 and stop 3. At Ko Kradan, take your snorkeling equipment down past the toilets and then swim out to the corals at the small beach (this is the fence for the same purpose). There was a fantastic fishing life close to land and many on our trip did not really pay attention to that part. The cave was also exciting. A little challenge to swim in there. Wear life vests - even if you feel like you're a good swimmer. Then you don't panic in the dark. The crew was super cute and helpful and the lunch was good. A huge recommendation from here.

Thomas KJan 19, 2026TRIPADVISOR

Additional information

This tour is not recommended for pregnant women, infants under 3 years, people over 70 years or people with back or neck problems. There is a minimum of 15 people required to run this tour! The tour program is subject to change due to weather & sea conditions