Full day Speedboat

4 Islands by Speedboat

The same four islands, with an extra two hours in the water

Koh Chueak, the Emerald Cave at Koh Mook, lunch on Koh Kradan and an afternoon on Koh Ngai — the classic route, done fast enough to linger at every stop.

This is the same string of islands as our longtail day, run the other way round and at twice the speed. The boat gets you to Koh Chueak while the water is still glassy, so the first snorkel of the day is the best one.

From there it is Koh Mook and the swim through the tunnel into the Emerald Cave, then a long stop at Koh Kradan — buffet lunch, two and a half hours of white sand, and another snorkel on the way out. The day finishes on Koh Ngai, which is the quietest beach of the four.

Take the longtail if you want the slower, cheaper, more traditional version. Take this one if you would rather spend the travelling time in the water instead.

Highlights

Koh Chueak first, before anyone else is on the reef
Swim the tunnel into the Emerald Cave
Two and a half hours on Koh Kradan, lunch included
Two separate snorkel stops around Kradan
Beach time on Koh Ngai before the run home

How the day runs

08:00–09:00
Hotel pickup

We collect you from your resort anywhere on Koh Lanta Yai.
09:00–10:40
Koh Chueak

Depart Koh Lanta for Chueak Island and the first snorkel of the day — coral flowers and tropical fish in calm morning water.
10:40–11:30
Emerald Cave, Koh Mook

Swim the 80m tunnel through the cliff to the tiny hidden beach inside.
11:30–14:00
Koh Kradan

Buffet lunch and a long stretch of beach time, then snorkeling again as we leave.
14:00–15:00
Koh Ngai

Swimming and the quietest sand of the day.
15:00–16:00
Sail home

Depart Koh Ngai for Lanta, then a transfer back to your hotel by car or boat.

Times are indicative. Sea state, tide and the national park can all shift the running order — your guide will tell you on the morning if anything changes.

What's included

Free hotel transfer, both ways
Mask, snorkel and fins
Life jacket
Buffet lunch, soft drinks and fresh fruit
Experienced English-speaking local guide
Insurance

Not included

National park fee — THB 400 adult / THB 200 child, paid on the day
Towels
Alcoholic drinks

Before you book

Fitness: Easy–Moderate. Life jackets and float rings are on board and a guide stays with anyone who is not a confident swimmer.
Bring: a towel, a rash vest, reef-safe mineral sunscreen, a dry bag, and cash in baht for any national park fee.
Weather: if we cancel for sea conditions you get a full refund or a free move to another day.
Reef rules: no standing on coral, no touching wildlife, no feeding monkeys, and no sunscreen containing filters banned in Thai marine parks.