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water-activities · boat-charters · wildlife-nature

Koh Samui Speedboat Snorkel to Koh Tan & Koh Madsum — Day Trip

A half‑day speedboat trip from Koh Samui to Koh Tan and Koh Madsum combining guided snorkeling over shallow coral reefs with beach time and a Thai lunch. Ideal for travelers seeking accessible marine life viewing and a relaxed island stop.

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Adventure brief

A full day in Chaweng.

FamilyAll ages welcome

FitnessModerate

WildlifeGiant clams and colorful reef fish + Occasional sea turtles near deeper reef patches

Operator baseKoh Samui, Surat Thani

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You step off the speedboat into a shallow world of turquoise that seems to push and pull at your snorkel, the sea daring you to look closer. The surface is a patchwork of sunlight and scattered coral bommies; beneath, schools of parrotfish thread between staghorn and brain coral while the boat idles a short swim from a white sand strip.

Frequently asked questions

Do I need to be an experienced swimmer to join?

No — the tour is rated easy and provides life jackets; however, basic swimming comfort and the ability to float and tread water are recommended.

Will snorkeling gear be provided?

Yes, standard masks and life jackets are provided, but many travelers bring their own mask for comfort and fit.

What happens if the weather is bad?

Operators typically cancel for safety if seas are rough; their policy offers a full refund or rescheduling if canceled 24+ hours before departure or due to bad weather.

Are children allowed on this trip?

Yes children (usually 4–11) can join with a child ticket, but minors should be supervised and wear life jackets when required.

Local insights

Wildlife

Giant clams and colorful reef fish
Occasional sea turtles near deeper reef patches

History

Koh Samui and its satellite islets developed around fishing and coconut plantations; local island life remains centered on small‑scale fishing and hospitality.

Conservation

Coral reefs here are fragile—avoid anchoring on reefs, use reef‑safe sunscreen, and follow guides’ advice to limit contact with marine life.

Adventure tips

Arrive Early for Calm WaterMorning departures usually have the calmest seas and best visibility for snorkeling—plan to be in the hotel lobby 15 minutes before pickup.

Use Reef‑Safe SunscreenProtect coral and your skin—apply reef‑safe sunscreen before boarding to reduce chemical runoff into shallow reefs.

Practice Good Snorkel EtiquetteAvoid touching or standing on coral; use slow fin strokes and keep a respectful distance from marine life to prevent damage.

Bring a Waterproof PouchKeep your phone, extra cash and a light jacket in a dry pouch—boats can spray and conditions change quickly.

Recommended gear

Mask & Snorkel: A well‑fitting mask improves visibility and comfort during multiple snorkel sessions.
Reef‑Safe Sunscreen / UV Rashguard: Protects skin from strong tropical sun and reduces harm to coral reefs.
Water Shoes: Helpful for rocky landings and walking on hotter sand at island beaches.
Dry Bag (5–10L): Keeps valuables and spare clothes dry during boat transfers and splashy conditions.

My Trip

My Trip

Koh Samui Speedboat Snorkel to Koh Tan & Koh Madsum — Day Trip

A full day in Chaweng.

Make a day of it nearby.

Difficulty

Duration

Fitness level

Wildlife

History

Conservation

Choose a date and book.