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  • Address: Koh Tan, Thailand
In stark contrast to its famed northerly neighbor, tiny and sleepy Koh Tan tempts visitors with empty beaches and vehicle-less roads just three miles and a 15-minute boat ride south of Koh Samui’s southern tip. Koh Tan (also spelled Koh Taen) is sometimes also called Coral Island for its diversity of colorful hard and soft corals, and it often serves as a popular day-long escape for snorkel or kayak excursions through its clear inshore waters. Though the island doesn’t have quite the aquatic diversity of other more remote locations, it still affords excellent snorkeling, relatively empty beaches and navigable mangrove swamps all very close to a major tourist hub. Longboats make the crossing daily and usually stop at several unique coral spots around the island.

On land, Koh Tan spans only three square miles, and its population barely tops 30 people; their rustic lifestyle with limited electricity affords a glimpse of what much of Thai Island-living was like decades ago. Koh Tan also has a thriving population of monitor lizards, a boardwalk through a mangrove forest, a quaint local temple, a handful of local restaurants and a cluster of bungalow-style accommodations.

Practical Info

Full-day longboat snorkel tours now leave from points all around Koh Samui. Many tours also include a visit to neighboring Koh Mudsum. More elaborate options, including sunset cruises and even more luxurious Chinese junk sailing tours, are also becoming available as Koh Tan increases in popularity.

Tours & Tickets

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Koh Tan Island Snorkeling Tour from Koh Samui, Koh Samui, null
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 5

Koh Tan Island Snorkeling Tour from Koh Samui

4 star rating: Recommended 6 Reviews

Spend a full day in the sun on a snorkeling tour at the unspoiled reef of Koh Tan (Coral Island), reached by local long-tail fishing boat from Koh Samui. Then ...  Read more

Location: Koh Samui, Thailand
Duration: 8 hours 30 minutes (approx.)

From USD $46.32
Koh Samui Island Cruise and Snorkel Full-Day Tour, Koh Samui, Snorkeling
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 5

Koh Samui Island Cruise and Snorkel Full-Day Tour

4 star rating: Recommended 6 Reviews

Enjoy the many beautiful unspoiled beaches of Koh Samui on this full-day cruise and snorkel tour.

Location: Koh Samui, Thailand
Duration: 7 hours (approx.)

From USD $68.56
Snorkeling and Sightseeing at Koh Tan, Koh Samui, Snorkeling
TVRM_SORTED : true ESSENTIAL : 1 ADMISSION : 5

Snorkeling and Sightseeing at Koh Tan

Snorkeling does not get better than this; a fabulous half-day tour to experience the best coral reefs around the pristine island of Koh Tan, off the coast of ...  Read more

Location: Ko Samui, Thailand
Duration: 4 hours (approx.)

From USD $39.70
Ang Thong National Marine Park Cruise from Koh Samui, Koh Samui, Snorkeling
TVRM_SORTED : true ESSENTIAL : 2 ADMISSION : 5

Ang Thong National Marine Park Cruise from Koh Samui

Sail from Koh Samui to the pristine island beaches of Ang Thong National Marine Park. Sip your welcome drink aboard the ‘Red Baron,’ a traditional Thai sailing ...  Read more

Location: Koh Samui, Thailand
Duration: 10 hours (approx.)

From USD $120.44
Private Beach Picnic in Koh Samui, Koh Samui, Day Cruises
TVRM_SORTED : true ESSENTIAL : 2 ADMISSION : 5

Private Beach Picnic in Koh Samui

5 star rating: Highly Recommended 2 Reviews

This is the original and most sought after boat trip and beach picnic experience on Koh Samui, Thailand. On board a long tail boat, within 15 minutes, you are ...  Read more

Location: Surat Thani, Thailand
Duration: Flexible

From USD $108.09
Koh Samui Full-Day Fishing Tour, Koh Samui, Romantic Tours
TVRM_SORTED : true ESSENTIAL : 2 ADMISSION : 5

Koh Samui Full-Day Fishing Tour

2.5 star rating: It was OK, but could have been better 2 Reviews

Fish for snapper, mackerel and other Gulf of Thailand seafood on this full-day fishing tour from Koh Samui. With an experienced captain, cruise to islands, ...  Read more

Location: Koh Samui, Thailand
Duration: 7 hours (approx.)

From USD $63.00
Koh Samui Small-Group Day Cruise with Snorkeling and Lunch, Koh Samui, Fishing Charters & Tours
TVRM_SORTED : true ESSENTIAL : 2 ADMISSION : 5

Koh Samui Small-Group Day Cruise with Snorkeling and Lunch

Enjoy this small-group tour with a professional guide in a beautiful cruise around Koh Samui. This Full-day cruise will shows the best of the island from the ...  Read more

Location: Ko Samui, Thailand
Duration: 10 hours 30 minutes (approx.)

From USD $125.90

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