Snorkeling Koh Kradan, Koh Mook & 4 Islands from Koh Lanta

Swim into the Emerald Cave, then snorkel among tropical fish at five separate reefs.

A full-day snorkeling trip from Koh Lanta visits five islands by longtail boat: Koh Kradan, Koh Mook (where you swim through the Emerald Cave into a hidden lagoon), Koh Chueak, Koh Maa, and Koh Ngai. You snorkel at two reef sites, swim in the cave, relax on white sand beaches, and eat a buffet lunch on the shore. Hotel pickup and all gear are included.

The experience

The day starts with pickup from your Koh Lanta hotel around 7:30 am and a transfer to the pier. The longtail boat departs at 8:30 am and heads first to Koh Ngai for sightseeing, then to Koh Kradan by 10:40 am. Koh Kradan is known for its white sand and clear water. You'll snorkel here among the coral and fish. At noon, you eat a buffet lunch on the beach and have time to rest before moving on.

The Emerald Cave at Koh Mook is the centerpiece: you swim through a narrow limestone passage that opens into a hidden lagoon surrounded by cliffs. After the cave, the boat moves to either Koh Chueak or Koh Maa, where you snorkel again at a different reef. The return journey starts around 3:15 pm and gets you back to your hotel by late afternoon. Snorkeling equipment, a beach towel, soft drinks, water and fresh fruit are provided throughout the day.

The group stays small, which means more space on the boat and less crowding at each stop. A live English or Thai-speaking guide is on board. Children from age 4 are welcome. The trip is not recommended for travelers with spinal injuries, pregnancy, or cardiovascular concerns.

What’s included

• Round-trip hotel pickup and transfer to the pier.
• snorkeling gear and beach towel.
• buffet lunch served on the beach.
• soft drinks, drinking water and fresh fruit on board.
• passenger insurance.
• live guide in English or Thai.

Before you book

Days and timesEvery dayDeparts at 09:00

Book up to12h before

AgesAdult (12 to 80 years) · Child (4 to 11 years) · Under 4: can't be booked

GroupUp to 20

Live guideEnglish and Thai

Meeting point and pickupHotel pickup included.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.It may be canceled due to bad weather or if the minimum number of travelers isn't reached. If that happens, you're offered another date or a refund.

Paid on siteUS$ 6.07

Prices and times updated 2 days ago

Good to know

Low physical effortPublic transport nearbyNot recommended during pregnancyNot recommended with heart problemsNot recommended with back problems

Operated by Rainbow Lanta Travel & Tour

Is this one for you?Small groups mean more comfort on the boat and less crowding at each reef and cave, so you get more space to move and more time to explore without feeling rushed through the stops.

Traveler reviews

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Top questions

What languages is the tour guided in?

Live guide in English and Thai.

Can children come?

Yes. Ticket types: Child (4 to 11 years). Children under 4 can't be included in the booking.

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24 h before the start.

What is the Emerald Cave at Koh Mook like when you swim into it?

The Emerald Cave (Tham Morakot) is a passage through limestone that opens into a hidden lagoon surrounded by tall cliffs. You swim through the narrow entrance and emerge into the enclosed lagoon. It's a one-of-a-kind moment on the trip.

How many times do you get to snorkel, and where?

You snorkel twice: first at Koh Kradan around 10:40 am, then again at either Koh Chueak or Koh Maa in the afternoon. Both sites have coral reefs and tropical fish.

Does the price include lunch and drinks?

Yes. A buffet lunch is served on the beach at Koh Kradan, and soft drinks, drinking water and fresh fruit are available on board throughout the day.

What time does the boat return to Koh Lanta?

The boat departs the islands around 3:15 pm and returns to your hotel by late afternoon, typically by 4:30 pm.

Is snorkeling gear provided, or do you need to bring your own?

Snorkeling equipment is included. You also get a beach towel for the day.