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    Koh Hong: Discover Krabi's Hidden Emerald Lagoon

    Koh Hong translates to “Emerald Island,” and the name is perfectly apt. This island features a completely enclosed freshwater lagoon surrounded by dramatic limestone cliffs—a natural wonder that seems almost mythical.

    The experience of paddling through the narrow coral passage into the lagoon and finding yourself surrounded by 200-meter cliff faces with no exit visible is surreal. You’ve entered a hidden world.

    Small Group Tours
    HightLights

    Why Koh Hong?

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    The Magical Lagoon

    The lagoon is the heart of Koh Hong’s appeal. It’s freshwater, enclosed by coral formations and limestone cliffs, and creates a sense of being in a secret place. The water is incredibly calm and peaceful.

    Paddling into the lagoon is an adventure in itself. You navigate through a narrow passage in the coral reef, and suddenly you’re in this enclosed world with the sky above and cliffs surrounding you.

    Dramatic Natural Setting

    The limestone cliffs rising around the lagoon create an almost otherworldly setting. The rock formations show geological patterns and colors—striations, vegetation, natural weathering patterns.

    It’s one of the most visually dramatic locations in Krabi.

    Snorkeling and Marine Life

    The coral passage and outer reefs host diverse marine life. Snorkeling here reveals healthy coral ecosystems and colorful fish.

    Unique Experience

    Koh Hong offers an experience you can’t get anywhere else. It’s not just a beach; it’s an enclosed natural wonder that creates a sense of discovery and adventure.

    Experience

    What You’ll Experience at the Koh Hong

    What You'll Experience

    What You'll Experience

    The Paddle Through the Coral Passage

    This is the signature Koh Hong experience. You’ll paddle (or be paddled on a canoe) through the narrow coral passage. It’s not dangerous, but it is thrilling—the passage is shallow and narrow, creating a sense of entering a hidden realm.

    What You'll Experience

    What You'll Experience

    Time in the Lagoon

    Once inside the lagoon, time feels different. The cliffs rise around you. The water is still and reflective. You can swim, float, or simply sit and absorb the surreal beauty.

    Outer Reef Snorkeling

    Outside the lagoon, you’ll snorkel the outer reefs where marine life is abundant.

    Your Experience

    Who and When to visit Koh Hong

    Best Time to Visit Koh Hong

    High Season (Nov-Feb):

    Calm seas ideal for lagoon paddling.

    Shoulder Season (Mar-May):

    Excellent, fewer tourists.

    Rainy Season (Jun-Oct):

    Possible, but seas can be rough.

    Who Should Visit

    Koh Hong works for adventurous travelers, photographers, snorkelers, and anyone seeking unique experiences. If you're uncomfortable with confined spaces or narrow passages, discuss with guides before booking.

    What Our Guests Say

    TripAdvisor★★★★★

    Very good experience. We chose the sunrise tour to avoid the crowds and thats exactly what simba gave us. Their timings are perfect. We were the first ones to reach Maya Bay. We got the entire beach to ourselves. Truly a memorable experience. The snokerling sights chosen by simba were excellent. We got to see marine life in abundance. The waters were crystal clear and had very less crowd. A SPECIAL MENTION TO OUR GUIDE SARA. She was extremely polite, cooperative, considerate. She explained each sight visit to us and gave us alot of time to explore the places. We were well taken care of.

    Sai C

    2 weeks ago

    Google★★★★★

    Fabulous tour from start to finish. We were picked up at 4 40am, getting out to the islands before all the crowds and only 11 guests on board. The team were warm and very attentive. Our female tour guide was so full of energy and was hilariously passionate about helping us capture those memorable pics! Snorkeling we saw numerous baby sharks (and even a 1.5m+ one eeekkk!) and a cuttlefish. This was hands down the best island tour we've been on, topped up regularly with delicious snacks and drinks and finishing with a tasty lunch. Would recommend!

    Carly Passingham

    June 2026

    GetYourGuide★★★★★

    Service was great, guides were great! Absolutely amazing tour! So amazing that we just cancelled our next tour by other company and booked one more Simba tour❤️ Special thanks to everyone that made this trip unforgettable for us! Emin&Elvira

    Elvira

    June 2026

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