Snorkelling · from Koh Lanta
A speedboat day from Koh Lanta to the outer islands of the Mu Ko Lanta national park, for snorkelling, a beach and a lunch buffet. Koh Haa has been closed since 11 June 2026 and we have found no announcement of its reopening: check before you book.
Duration
7.5–8.5 hours
Stops
3 on the route
Starts in
Koh Lanta
Price
From ฿1,568
Koh Rok and Koh Haa are the islands dive and snorkel operators rate most highly in the area, well out to sea in the Mu Ko Lanta national park. They are Lanta's day at sea: the boats leave from Koh Lanta, which is about three hours from Ao Nang by road and ferry, so this is a trip for people staying on Lanta.
The operator lists snorkelling over the reefs, time on a beach and a lunch buffet, by speedboat, in 7.5 to 8.5 hours. Pickup is available and guiding is in English. Coral bleaching was reported around these islands in 2024, so what you see under water depends on the year as well as the day.
The calendar matters more than the operator. The national parks department closes Koh Rok from 1 June to 30 September and Koh Haa from 1 August to 30 September, and trips run mostly from November to April. In 2026, Koh Haa was also closed on 11 June because of Portuguese man o' war, and we have found no announcement of its reopening: before you book, check with the operator that both islands are on the programme for your date.
Stop 1 of 3
Two islands far south of Lanta, in the Mu Ko Lanta national park; closed from 1 June to 30 September.
Stop 2 of 3
A small group of islands described by operators as having a sheltered lagoon; closed every year from 1 August to 30 September, and also closed since 11 June 2026, with no reopening announced.
Stop 3 of 3
Time on a beach and lunch, as the operator describes them.
01
The islands operators rate most highly for snorkelling around Krabi and Lanta.
02
A speedboat day to the outer islands of the Mu Ko Lanta national park.
03
Both islands close for part of the year; trips run mostly from November to April.
The national parks department's 2026 schedule closes Koh Rok from 1 June to 30 September, and Koh Haa from 1 August to 30 September. Trips run mostly from November to April, and the dates are set each year.
No, not as we write: Koh Haa has been closed since 11 June 2026 because of Portuguese man o' war, and we have found no announcement of its reopening. Check with the operator before you book, and ask what the trip offers instead.
Not sensibly as a day trip: the boats leave from Koh Lanta, which is about three hours from Ao Nang by road and ferry. If Koh Rok is the point of your trip, sleep on Lanta.
Thai rules in force since April 2025 require a life jacket when you snorkel near reefs, unless you hold a freediving certificate, and forbid touching or feeding marine life. Sunscreens with certain reef-harmful ingredients are banned in the marine parks: bring a reef-safe one.
Book it
Dates, times and live prices come up at the next step. Booking takes two minutes, and the cancellation terms are shown before you pay.
From ฿1,568
Koh Lanta
Koh Lanta