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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★★★★★

    Had an amazing experience with Simba Sea Trips! Everything was incredibly well organized from the hotel pickup to the entire Phi Phi Islands trip. The small-group setup made the experience feel much more relaxed and enjoyable, and the whole day ran smoothly. A special mention to Sara, She was absolutely fantastic! Friendly, energetic, knowledgeable, and genuinely made the trip more enjoyable. She took great care of everyone, explained everything clearly, and created such a fun atmosphere throughout the day. The crew, snorkeling spots, food, and overall service were excellent. Definitely one of the highlights of our Phuket trip. Highly recommend Simba Sea Trips, and if you’re lucky enough to have Sara on your tour, you’re in great hands!

    Talha Z

    2 weeks ago

    Google★★★★★

    This trip was great. Transport actually came early and we were on the boat by 6am. Sara gave us a quick brief and we watched the sunrise on the way to Maya beach. The beach was pretty empty and the breakfast was good with plenty of food. We had a lot of time to swim and snorkel at the stops and they pointed out cool fish and baby sharks to see in the water. There were only 7 of us so plenty of room on the boat although the seating was enough that it wouldn’t feel too crowded even when full. Everything was well organized. Sara and crew were great definitely recommend this island boat tour it was my favorite tour of my trip!

    Rizalina Arce

    4 weeks ago

    GetYourGuide★★★★★

    The whole experience was amazing! We were lucky to be in a smaller group so the tour was really detailed! The food and drinks do not stop- we were incredibly well taken care of!

    Danielle

    2 weeks ago

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