THE ADVENTURE COLLECTIVE® · Independent discovery and booking for outdoor travel
Spend a full day by speedboat from Koh Lanta visiting Koh Mook’s Emerald Cave, Koh Kradan and three other islands for snorkeling, swimming and beach time. This trip combines short swims through a spectacular sea cave with reef snorkeling and relaxed beach breaks.
Spend a full day by speedboat from Koh Lanta visiting Koh Mook’s Emerald Cave, Koh Kradan and three other islands for snorkeling, swimming and beach time. This trip combines short swims through a spectacular sea cave with reef snorkeling and relaxed beach breaks.
Book with Oh-Hoo
Book directly with Oh-Hoo for the best rates and real-time scheduling.
Reserve NowVerified experiences and guided adventures in the surrounding area.
Operated by Oh-Hoo · Koh Lanta, Krabi Province
Morning light breaks along Koh Lanta’s pier and a low-angled speedboat slips into the Andaman Sea, water daring you to keep up. On this full-day run you’ll cross open blue to a chain of limestone isles—Koh Chueak, Koh Mook (home to Emerald Cave), Koh Kradan and Ko Mah/Ngai—each stop a different invitation: reefs that hold schools of clownfish, a cave that demands you swim through a dark throat and emerge into a hidden emerald lagoon, and broad white sands for stretching stiff legs.
easy.
7–8 hours.
Suitable for travelers with basic fitness who can swim short distances and climb on/off a small speedboat.
No—this tour is marketed as suitable for most fitness levels, but you should be comfortable swimming short distances and wearing a life jacket; advise the guide if you need extra help.
The swim-through tunnel is short—typically a minute or two depending on tide—and leads to a sheltered inner beach; access depends on sea level and operator timing.
Yes—children aged 3–11 generally qualify for child tickets; infants must sit on laps and all children should be supervised when swimming.
Operators may postpone or cancel for safety with a full refund; check pickup confirmation and allow flexibility for sea condition changes.
The Trang and Krabi island chain has long been a maritime zone for local fishing communities and sea‑faring groups; islands served as seasonal fishing and boat‑repair stops for generations.
Coral reefs here are sensitive—use reef‑safe sunscreen, avoid touching or standing on coral, and follow guides’ instructions to minimize impact.
Oh-Hoo operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.
Book with Oh-Hoo
Book directly with Oh-Hoo for the best rates and real-time scheduling.
Reserve Now