CAT BA :2D1N Lan Ha bay-Ha Long bay with Plankton Excursion

Quiet water, glowing plankton, and village life.

This two-day trip from Cat Ba offers a calmer way to see Lan Ha Bay and the southern part of Ha Long Bay. I like the mix of kayaking through hidden lagoons and time spent in Viet Hai Village, where the pace feels closer to island life than to a standard boat cruise. I also like the chance to see bioluminescent plankton at night, a small natural show that can become the highlight of the trip.

The main consideration is the overnight setup. The tour describes a floating homestay, but one recent experience involved sleeping in a room below deck on the boat rather than in a house on the floating village. You should confirm the exact sleeping arrangement before paying, especially if accommodation matters as much to you as the scenery.

Key points to know before booking

• Bioluminescent plankton after dark: Kayak or fish for squid at night and watch the water sparkle when disturbed.
• A quieter side of the bay: The route favors Lan Ha Bay and southern Ha Long Bay, with smaller groups and fewer boats than the busiest cruise corridors.
• Two full days of activity: Expect kayaking, swimming, cycling, village walking, cave visits, and time to rest on deck.
• Viet Hai Village adds local life: You can cycle through rice fields, meet residents, try seasonal farm work, and experience a fish massage.
• Meals are a strong part of the trip: Vietnamese food, seafood, and vegetarian dishes are included on the boat and at the overnight stop.
• The $110 price covers a lot: Transport in Cat Ba Town, meals, water, kayaking, plankton viewing, squid fishing, and an English-speaking guide are included, but the $16 entrance fee and drinks are extra.

Why this route feels different from a standard bay cruise

Most people come to northern Vietnam for the tall limestone islands rising from the sea. This trip gives you those famous views, but it does not treat the bay as a quick photo stop. You spend long stretches on the water, paddle into quiet lagoons, swim away from the busiest routes, and sleep offshore.

I especially like the balance between active outings and easy time on the deck. You are not rushing from one attraction to another all day. After kayaking or cycling, you can sit in the sun, take photos, or sleep during the return cruise.

The tour begins at the Cat Ba Smile Tours office at 204, 1/4 Street, in Cat Ba Town. Hotel pickup in town is also available. A short transfer takes you to Beo Harbour, roughly one kilometer away, where the boat leaves at about 7:45 in the morning.

The operator describes the group as small, though no fixed maximum is given. That is worth asking about if you want a very personal trip. The smaller format should suit you if loud music, crowded decks, and large cruise groups are not your idea of a good bay experience.

Morning among fishing boats and limestone islands

The first section moves through the floating fishing village at Beo Harbour. It is one of Vietnam’s old floating communities, and your English-speaking guide explains how fishermen and their families have built their lives on the water.

This part gives the bay some human context. Instead of seeing only dramatic rock formations, you learn how people use the sheltered waters for work and home life. Guides such as B, Chilly, and Moka have been praised for their warmth and enthusiasm, with B also sharing information about Cat Ba Island and the national park.

The boat then passes formations with memorable names, including Turtle Islet, Toad Islet, and Candle Islet. These islands are best appreciated from the deck, so keep your phone or camera ready. The scenery changes slowly, and the real pleasure comes from watching one rock shape give way to another as the boat moves between them.

If you prefer constant commentary, ask your guide questions as you go. If you want quiet, the open deck gives you space to simply watch the water. That flexibility is one of the trip’s strengths.

Kayaking through Bright, Dark, and Bat Caves

At the border between Lan Ha Bay and Ha Long Bay, you spend about 90 minutes kayaking. The route includes Bright Cave, Dark Cave, and Bat Cave, leading into enclosed lagoons where the water is calmer and the limestone walls feel close.

This is not a sightseeing trip where you remain seated on the boat. You need to be comfortable paddling and getting into a kayak. The tour includes kayaking, and calm lagoon water makes the activity approachable, but you should still bring swimwear and expect to get wet.

The caves and lagoons are among the most memorable parts of the first day because they change your viewpoint. From the main boat, you see the bay as a wide panorama. From a kayak, you move close to the rock walls and enter narrow spaces that a larger vessel cannot reach.

The pace depends on the group and weather. The guide leads the route, and the activity takes up a substantial part of the morning. If you want a completely restful cruise, this schedule may feel busy. If you enjoy hands-on sightseeing, it gives the day useful variety.

Swimming at Cam Lagoon

After kayaking, the boat continues to Cam Lagoon, a private swimming area in the middle of Ha Long Bay. You get around 30 minutes in the water, with the option to jump from the deck.

The lagoon is promoted as less touristy than better-known swimming stops. That matters because swimming is much more enjoyable when you are not sharing a small patch of water with a crowd of boats. The water is described as clear and blue, though conditions can change with weather.

You should bring sunscreen and swimwear, and keep a towel or dry change of clothes handy if you have one. The tour includes bottled water, but drinks such as beer, wine, and soft drinks cost extra.

Lunch follows on the boat, usually from noon to 1 p.m. The meal includes Vietnamese dishes, seafood, and vegetarian choices. Food was one of the most consistently praised parts of the experience, with particular appreciation for the quality and the vegetarian options.

Cycling into Viet Hai Village

After lunch, the boat returns by another route toward Viet Hai Harbour. From there, you cycle across rice fields to Viet Hai Village, arriving between about 2:30 and 4:30 p.m.

This stop gives you a break from the water and a closer look at daily life on Cat Ba. You can walk around the village, meet local residents, and hear about their culture and routines. Seasonal farm work may be available if you want to take part.

The cycling section is valuable because it slows the trip down. A bay cruise can sometimes feel like a series of scenic viewpoints. Viet Hai gives you a place to pause and see how people live beyond the boats and cliffs.

A fish massage is also offered as a local experience. It is unusual, harmless fun for many people, but not essential. If the idea does not appeal to you, the village walk and countryside ride are enough to make the stop worthwhile.

You should not expect a major historical attraction here. Viet Hai is about the setting, local contact, and a change of pace. The cycling route may also be less appealing if you dislike riding or if weather makes outdoor activity uncomfortable.

The overnight boat and the night-glowing water

Dinner is served around 6 p.m. at the floating overnight accommodation, with traditional Vietnamese food. The evening is the most unusual part of the trip because you can choose between squid fishing and kayaking to look for bioluminescent plankton.

The plankton glows when the water is disturbed. A paddle stroke or movement through the lagoon can create brief flashes of light around you. It is not a guaranteed fireworks display, and darkness and water conditions matter, but the experience can feel wonderfully strange when it works.

This is the activity I would prioritize. One couple described kayaking at night to see the plankton as magical, while another praised the calm atmosphere and the guide’s gentle, considerate manner. Moka has been singled out for being especially kind and discreet, while Chilly is known for bringing more energy and humor to the group.

Squid fishing gives you another way to enjoy the evening. You can spend time on the water, breathe the cool night air, and avoid the party-cruise feel found on some larger boats.

The sleeping arrangement deserves a careful question before booking. The tour uses the term floating homestay, but the actual setup may be a room on a boat. One person expected to sleep on a floating village and instead found a below-deck boat room, with limited shower access. That does not make the trip unsuitable, but it shows why you should confirm whether you will have a private bathroom, what kind of cabin you receive, and where the boat remains overnight.

A sunrise start and Ho Ba Ham

The second day begins with breakfast at 8 a.m. You can watch the sunrise, breathe the fresh air, and enjoy a quieter hour before the activities begin.

At about 9 a.m., the boat heads toward Ho Ba Ham, an area known for three concealed lagoons. Around 11 a.m., you visit Dau Be Island and have time at a deserted beach, followed by kayaking through Ho Ba Ham.

This section is meant to feel more remote than the first day. The combination of a beach stop and three lagoons offers two different moods: time on shore and close exploration from the kayak.

There is one practical warning here. Weather can change the second-day program. One experience followed the first day as planned but had only kayaking on the second day, without the expected Dau Be Island beach visit. Another trip could not reach Ha Long Bay because of weather and stayed in Lan Ha Bay instead.

That is not unusual for a bay excursion. Wind, rain, visibility, and sea conditions can affect the route. I would book this trip for its general style and range of activities, not on the promise that every named stop will happen exactly as printed.

Lunch, swimming, and the return to Cat Ba

Lunch is served around noon, prepared in a local style. Afterward, the boat returns toward Lan Ha Bay for more kayaking, swimming, sunbathing, and time around the limestone islands.

The afternoon is less structured than the first morning. You get room to choose between active time in the water and rest on deck. I like this design because two days of kayaking and sightseeing can become tiring if every hour is tightly controlled.

The boat returns to Cat Ba Town at about 3 p.m., with the activity finishing at the office around 3:30 p.m. Bus tickets onward to Hanoi, Ninh Binh, Ha Giang, or Sapa can be booked for around 4 p.m. That connection is useful, but leave yourself some breathing room if you have an important onward departure.

Hotel drop-off in Cat Ba Town is included. Pickup is available from your hotel or the Cat Ba Smile Tours office, so you should provide a working phone number and email when booking.

What the $110 price really includes

At $110 per person, this is good value if you plan to use the full program. The price includes two days of boat travel, all meals, bottled water, kayaking, squid fishing, bioluminescent plankton viewing, an English-speaking guide, and pickup and drop-off within Cat Ba Town.

The entrance ticket is not included and costs $16, or 400,000 Vietnamese dong. Drinks are also extra. Bring enough cash or ask the operator how payment works, particularly if you want beer, wine, or soft drinks with meals.

The value comes from the number of activities packed into the price. A short bay cruise might offer views and lunch, but this trip adds a village ride, cave kayaking, swimming, an overnight stay, and the night plankton outing.

The tradeoff is comfort. Do not choose this solely because it costs less than a polished luxury cruise. The accommodation may be basic, the schedule involves physical activity, and the route depends on weather. You are paying for access to varied experiences and quieter water, not for a high-end cabin.

Food, guiding, and the overall mood

The food receives unusually strong praise. Meals include Vietnamese cooking, seafood, and vegetarian choices, and the quality is a real reason to consider this tour if you care about eating well while away from town.

The guides are another major strength. B is described as helpful and informative, especially on Cat Ba, the bay, and Vietnamese life. Chilly brings enthusiasm and humor, while Moka offers a quieter, more attentive style. The right guide can make a big difference on a small-group trip because you spend so much time together.

The overall mood is calm rather than party-focused. You can sit on the deck, take photos, and enjoy the bay without loud music dominating the trip. That atmosphere suits couples, friends, solo visitors who like joining a small group, and families with older children who are happy to kayak and swim.

The trip is not suitable for people over 95, according to the operator. More broadly, you should be comfortable with boarding a boat, kayaking, cycling, swimming, and spending a night in basic accommodation.

What to pack and what to confirm

Bring swimwear and sunscreen as a minimum. I would also pack a dry change of clothes, a waterproof phone pouch, insect protection, and a small overnight bag rather than taking a large suitcase onto the boat.

Before booking, confirm these points:

• The exact sleeping location, cabin setup, and bathroom access
• The expected group size
• How weather changes affect the Ha Long Bay and Dau Be Island portions
• Whether the $16 entrance fee is paid in cash
• The availability of vegetarian meals if you have dietary needs

The operator allows cancellation up to 24 hours before departure for a full refund, and you can reserve now and pay later. Those terms are helpful when bay weather looks uncertain, but check the current conditions before setting out.

Should you book this Cat Ba excursion?

I would book it if you want quiet bay scenery, varied activities, good food, and a memorable night on the water. The glowing plankton, Viet Hai cycling, and cave kayaking give it more character than a simple sightseeing cruise.

I would hesitate if you need a clearly defined hotel-style room, a private bathroom, or a fixed route with every stop guaranteed. Weather can remove parts of the schedule, and the overnight accommodation may be more basic than the phrase floating homestay suggests.

For most active visitors spending time on Cat Ba, the $110 price is fair. Ask about the sleeping arrangement first, pack for water-based activities, and treat the exact route as weather-dependent. If you do that, this is a strong choice for seeing Lan Ha Bay at a slower, more personal pace.

FAQ

Where does the tour start and finish?

The tour starts at the Cat Ba Smile Tours office at 204, 1/4 Street, Cat Ba Town. Hotel pickup in Cat Ba Town is also available, and the trip ends back at the meeting point around 3:30 p.m. on the second day.

What is included in the $110 price?

The price includes hotel pickup and drop-off in Cat Ba Town, all meals, bottled water, kayaking, squid fishing, bioluminescent plankton viewing, and an English-speaking guide.

Is the entrance fee included?

No. The entrance ticket costs $16, or 400,000 Vietnamese dong, and is paid separately. Drinks such as wine, beer, and soft drinks are also not included.

Will I stay in a floating homestay?

The tour describes overnight accommodation as a floating homestay, but the exact arrangement should be confirmed before booking. One reported setup involved sleeping in a room below deck on the boat rather than in a separate floating village house.

What should I bring?

Bring swimwear and sunscreen. A dry change of clothes and protection for your phone are also sensible because the program includes kayaking and swimming.

Can the route change because of weather?

Yes. Weather can prevent the boat from reaching parts of Ha Long Bay or can change the second-day activities. The trip may remain in Lan Ha Bay, and named stops such as Dau Be Island may not always be possible.