Spend a six-hour day exploring Koh Taen’s snorkeling sites and Koh Madsum’s white-sand beach from Koh Samui. This small-group cruise pairs reef swims with a beachside Thai lunch and hotel transfers.
Spend a six-hour day exploring Koh Taen’s snorkeling sites and Koh Madsum’s white-sand beach from Koh Samui. This small-group cruise pairs reef swims with a beachside Thai lunch and hotel transfers.
The morning light sharpens against fuel lines of a longtail boat as it pushes away from Koh Samui’s pier, the sea nudging you toward a pair of small islands where coral gardens sit in shallow blue.
Verified experiences and guided adventures in the surrounding area.
Operated by Sunleisure World · Koh Samui, Surat Thani
The morning light sharpens against fuel lines of a longtail boat as it pushes away from Koh Samui’s pier, the sea nudging you toward a pair of small islands where coral gardens sit in shallow blue.
Koh Taen (Koh Tan) and Koh Madsum (Koh Mudsum) are low-lying limestone and sandstone isles formed by tropical uplift and ancient reef growth. Locals once used them for coconut groves and small-scale fishing; today they’re quiet chapters of coastal life where day-trippers meet winding tidal flats and reef edges.
Expect short boat hops—15–40 minutes depending on vessel—and two main stops: a morning snorkel at Koh Taen to watch parrotfish and damselfish navigate staghorn and brain coral, then a relaxed lunch and sunbed time on Koh Madsum’s white sand.
Water clarity often ranges from 5–20 meters in calm conditions; temperatures sit near 28–30°C most of the year. Currents can pick up around channels, so guides choose sheltered bays for snorkeling and manage group rotations.
Practical notes: the tour runs about six hours with hotel pickup in Koh Samui, snorkel gear and Thai lunch included. Bring reef-safe sunscreen, a lightweight rashguard, and a towel; wear water shoes for rocky shore entries. If you’re prone to seasickness, take preventive measures before boarding—the day’s comfort hinges on sea state.
Respect the reefs: don’t touch coral, take any trash back to the boat, and listen to guides who know local swell patterns. Done right, this is a compact, low-effort day that puts marine life and lazy beach time front and center.
Yes—basic masks, snorkels, and fins are supplied, but you may bring your own for a better fit.
Transfers vary by vessel: expect roughly 15–40 minutes each way depending on sea and boat type.
Children are welcome; infants should sit on laps during transfers and operators set limits per vessel for safety.
Full refund is available if cancelled at least 24 hours before departure; check the operator’s terms for weather-related changes.
Sunleisure World operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




The morning light sharpens against fuel lines of a longtail boat as it pushes away from Koh Samui’s pier, the sea nudging you toward a pair of small islands where coral gardens sit in shallow blue.
The morning light sharpens against fuel lines of a longtail boat as it pushes away from Koh Samui’s pier, the sea nudging you toward a pair of small islands where coral gardens sit in shallow blue.
Koh Taen (Koh Tan) and Koh Madsum (Koh Mudsum) are low-lying limestone and sandstone isles formed by tropical uplift and ancient reef growth. Locals once used them for coconut groves and small-scale fishing; today they’re quiet chapters of coastal life where day-trippers meet winding tidal flats and reef edges.
Expect short boat hops—15–40 minutes depending on vessel—and two main stops: a morning snorkel at Koh Taen to watch parrotfish and damselfish navigate staghorn and brain coral, then a relaxed lunch and sunbed time on Koh Madsum’s white sand.
Water clarity often ranges from 5–20 meters in calm conditions; temperatures sit near 28–30°C most of the year. Currents can pick up around channels, so guides choose sheltered bays for snorkeling and manage group rotations.
Practical notes: the tour runs about six hours with hotel pickup in Koh Samui, snorkel gear and Thai lunch included. Bring reef-safe sunscreen, a lightweight rashguard, and a towel; wear water shoes for rocky shore entries. If you’re prone to seasickness, take preventive measures before boarding—the day’s comfort hinges on sea state.
Respect the reefs: don’t touch coral, take any trash back to the boat, and listen to guides who know local swell patterns. Done right, this is a compact, low-effort day that puts marine life and lazy beach time front and center.