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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★★★★★

    Simba Sea Trips Phuket delivers one of the most polished and memorable island experiences you can have in Phuket. The "Luxury Small Group Sunrise Phi Phi Island and Maya Bay boat trip" feels carefully designed from start to finish, with every detail handled before the crowds arrive, so the day begins in calm, comfort, and style. The breakfast at the SOHO Club is a lovely way to start the morning at 6 am, and the hospitality only gets better from there. On board, the food and drinks are well thought out, and the final buffet lunch at the beach club is a fitting finish, with good vegetarian options as well. What sets this trip apart is the attention to guests. With no boat carrying more than 18 people, the experience never feels crowded or rushed, and there is a real sense that everyone is being looked after individually. That extra care makes a huge difference, especially on a premium trip like this. A special mention to our guide Noi Noi, whose witty commentary, deep knowledge, and genuinely personal attention made the journey even better. He had a wonderful way of making everyone feel included, and it was impressive to see first-time snorkelers, including guests who did not know how to swim, confidently enjoying the Phi Phi Don waters under his guidance. Our speedboat captain Dan Dan was amazing and how he guided through the choppy waters still keeping the boat steady and stable. Simba is a highly professional, luxury experience that is absolutely worth every penny.

    Maneck K

    5 days ago

    TripAdvisor★★★★★

    The entire trip was wonderful - the boat ride, the scenery, the stops for swimming and snorkel - everything was perfect. A dream come true, and still on my bucket list.

    poppylander

    7 days ago

    TripAdvisor★★★★★

    Dear Simba Tours Team, I wanted to take a moment to thank you for another fantastic experience following my recent Sunrise Phi Phi & Maya Bay tour. I have been travelling with Simba Tours since 2013, back when the company was under its previous ownership. Over the years, I’ve experienced tours under both the original and current owners, and what continues to impress me is the consistency of the experience and the standards you maintain. A few things have always stood out to me: • Professionalism from start to finish • A genuine customer-first approach • A team that clearly cares about creating memorable experiences rather than simply moving tourists from one location to another On this particular trip, Noi and his crew were exceptional. Their energy, charisma, humour, and ability to engage with guests made the day even more enjoyable. What impressed me most was the care shown towards guests who were nervous about the sea or snorkelling. I watched Noi personally enter the water with guests to help them overcome their anxieties and ensure they felt safe and comfortable. That level of care is rare and speaks volumes about the culture of your company. From time to time, I hear people comment that Simba Tours is more expensive than some other operators. Having travelled with many tour companies over the years, my response is always the same: there is a reason for the difference. With Simba, you are paying for professionalism, safety, organisation, quality, and an experience where guests genuinely matter. You’re not simply another number on a crowded boat. The attention to detail and customer care consistently justify the premium. After more than a decade of travelling with Simba Tours, it’s wonderful to see that the values that made me choose you in the first place are still very much alive today. Please pass my thanks on to Noi and the entire crew. They did a fantastic job and made what was already a beautiful day even more memorable.

    DesertRogue15k

    8 days ago

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