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

The best part of this 2-day Cat Ba cruise happens after sunset, when you paddle across dark water and stir up tiny points of bioluminescent plankton. By day, the route keeps away from the busiest parts of Ha Long Bay and links calm lagoons, limestone islands, village roads, and quiet beaches.

I like the small-group feel and the thoughtful mix of activities. Kayaking, swimming, cycling, squid fishing, and a village visit give you much more to do than simply sit on a boat. I also like the food, which includes Vietnamese dishes, seafood, and vegetarian choices.

The main thing to clarify before booking is the overnight setup. The trip describes a floating homestay, but one booking party found they slept in a low cabin on the boat rather than in a village home. Day two can also be shortened by weather or sea conditions, so ask exactly what will operate during your dates.

Key points to know before booking

• Bioluminescent plankton after dark: Kayak or paddle at night and watch the water sparkle when disturbed.
• Quiet southern route: The cruise focuses on Lan Ha Bay and the less crowded southern side of Ha Long Bay.
• A full first day: Expect a floating fishing village, caves, kayaking, swimming, lunch, cycling, and Viet Hai Village.
• Local-style meals included: Food covers lunch and dinner on day one, then breakfast and lunch on day two.
• English-speaking guides: Guides including B, Chilly, and Moka have been praised for care, enthusiasm, and cultural explanations.
• Extra cost to budget: The $110 price does not include the $16 entrance ticket or drinks.

Why this route feels different from a standard Ha Long cruise

Many Ha Long Bay trips are built around a large boat, a fixed sightseeing circuit, and long periods spent watching the view from the deck. This one uses Cat Ba as its base and pushes into Lan Ha Bay, where the pace is quieter and the scenery feels less crowded.

You still get the classic limestone towers, but the day has more variety. You move through a fishing village, paddle into caves and lagoons, swim from the boat, cycle through rice fields, and visit a local village. That combination makes the $110 price easier to justify than a simple overnight cruise.

The word small-group matters here. The exact number is not provided, but the experience is presented as a quieter trip rather than a packed party boat. That suits you if you want time on deck, calm water, and conversation with a guide instead of loud music and a tight schedule.

Weather controls much of the bay. Wind, rain, or rough water can change the route. One booking party reached Lan Ha Bay but could not continue into Ha Long Bay because of weather, so treat the route as a plan rather than a guarantee.

7:30 AM to 11:30 AM, fishing village and limestone islands

Your day starts at the Cat Ba Smile Tours office at 204, 1/4 Street in Cat Ba Town. Pickup is scheduled for 7:30 AM, either at the office or at your hotel in Cat Ba Town. A short transfer takes you to Beo Harbour, roughly one kilometre away.

The cruise begins through a floating fishing village, described as one of Vietnam’s oldest. This is not just a scenic pass-by. Your guide explains how fishing families live and work on the water, giving the bay a human side that is easy to miss from a large sightseeing boat.

As the boat continues, you pass limestone formations such as Turtle Islet, Toad Islet, and Candle Islet. Their names help you pick out shapes in the rock, while the changing angles from the boat keep the scenery from feeling repetitive.

English-speaking guides are a strong part of the experience. B has been singled out for explaining the bays, Vietnamese life, and Cat Ba National Park. Chilly is described as enthusiastic and fun, while Moka is noted for a calm and considerate manner. Your guide will affect the mood of the whole trip, so these names are useful when you ask the operator who is leading your departure.

Kayaking through Bright, Dark, and Bat caves

From the fishing village, the boat heads toward the boundary between Lan Ha Bay and Ha Long Bay. You spend about an hour and a half kayaking through Bright Cave, Dark Cave, and Bat Cave, entering sheltered lagoons surrounded by limestone walls.

This is one of the most active parts of the first day. You are not simply looking at the rock towers from a distance. You move at water level, where cave openings and enclosed lagoons feel more personal and quiet.

The route requires paddling, so bring swimwear and sunscreen, but also protect anything valuable from splashes. The provided information does not specify the kayak design or whether you paddle alone or with a partner, so ask if that matters to you.

The cave section also depends on tide, weather, and water conditions. If the route changes, the rest of the day still includes several separate activities, which gives this tour more flexibility than a schedule based on one major attraction.

Cam Lagoon, a half-hour swim from the boat

After kayaking, you move to Cam Lagoon, described as a private swimming area in the middle of Ha Long Bay. You get about 30 minutes to swim in clear water or jump from the boat’s deck.

This stop is a good reason to pack swimwear where you can reach it quickly. You do not want to search through a day bag while everyone else is already in the water. If you prefer not to jump, you can simply swim or stay on deck.

Calling it a private area does not promise total solitude, especially when weather forces boats onto the same route. Still, the stated aim is a less touristy swimming stop, and the short visit breaks up the morning nicely.

Lunch and the ride to Viet Hai Harbour

Lunch is served on the boat from noon to 1 PM. Meals include Vietnamese dishes, seafood, and vegetarian options. Food has been one of the most praised parts of the trip, including for vegetarians, which is useful if you are cautious about eating on a multi-day boat excursion.

Drinks are not included. Bottled water is included, but you pay separately for wine, beer, and soft drinks. If you want something specific with lunch or dinner, bring extra money for the bar.

After lunch, the boat follows another route toward Viet Hai Harbour. From 1 PM to 2:30 PM, you can nap, sit on deck, take photographs, or simply watch the islands slide past. This quiet stretch is welcome after a busy morning of paddling and swimming.

Cycling through rice fields to Viet Hai Village

At Viet Hai Harbour, the day shifts from sea to land. You cycle across rice fields to Viet Hai Village, then walk around to meet local people and learn about village life.

The cycling route gives you a closer view of Cat Ba’s interior. Instead of seeing the island only from a pier or boat, you pass through agricultural areas and reach a community with its own pace and traditions.

Seasonally, you may be able to work with local farmers. You can also try a fish massage, a distinctive local activity included in the village visit. These details make the stop feel less like a quick photo break and more like a chance to take part in everyday rural life.

The exact cycling difficulty is not provided. If you are unsure about the physical side, ask the operator before paying. The tour includes several active sections, but you can also spend parts of the day resting on the boat.

Night on the bay, with squid fishing and plankton

Dinner is served around 6 PM on the floating homestay, with traditional Vietnamese food. Then comes the most unusual activity: squid fishing or kayaking to look for bioluminescent plankton.

The plankton experience needs darkness and calm water. As your paddle or hand disturbs the surface, the tiny organisms may create a glowing effect. It is a small natural phenomenon rather than a guaranteed light show, but that uncertainty is part of the appeal. You are watching living water respond to movement.

You can also try squid fishing, depending on the evening program. The fresh night air and quiet bay make this a pleasant end to the day, even if the plankton is faint.

Clarify the sleeping arrangements. The program calls the overnight stay a floating homestay, but one account described a cabin at the back of the boat rather than a room in a floating village. That may be a matter of wording or a change in accommodation, but you should ask whether you will sleep on the boat, in a village homestay, and what bathroom facilities are available.

Day two at Ho Ba Ham and Dau Be Island

Breakfast is scheduled for 8 AM, with time to enjoy the sunrise and cool morning air. At 9 AM, the boat heads to Ho Ba Ham, also described as three hidden lagoons.

At about 11 AM, you visit Dau Be Island. The plan includes relaxing on a deserted beach and kayaking around Ho Ba Ham. This should be another quiet water section, with time for paddling and a beach stop rather than a rushed viewpoint.

The second day is less predictable than the first. One booking party received only kayaking and missed Dau Be Island and the beach. Weather, timing, and local conditions may explain the change, but you should not book this trip solely for that beach visit.

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

The return to Cat Ba Town is planned for 3 PM, with the activity ending at the office around 3:30 PM. If you are continuing by bus, tickets can be booked for routes to Hanoi, Ninh Binh, Ha Giang, or Sapa at 4 PM. That leaves a useful gap, but allow extra time if weather or boat delays affect the return.

What the $110 price really covers

At $110 per person, the trip offers solid value if you want an active overnight experience rather than transport and scenery alone. You receive hotel pickup and drop-off within Cat Ba Town, meals, bottled water, kayaking, squid fishing, plankton viewing, and an English-speaking guide.

The price also covers two days of boat-based sightseeing plus the Viet Hai village visit. Meals are a meaningful part of the value, since you would otherwise need to arrange food during a remote bay trip.

Budget another $16, or 400,000 Vietnamese dong, for the entrance ticket. Drinks are extra, including beer, wine, and soft drinks. The advertised price is therefore not the final amount, but the additional cost is clear and easy to plan for.

I would choose this trip if you value variety and quiet more than polished luxury. I would compare other options if your priority is a spacious cabin, a clearly defined hotel-style homestay, or a guaranteed Ha Long Bay route.

Who will enjoy this two-day trip most

This tour suits you if you like being active during the day and relaxed at night. You need to be comfortable with kayaking, swimming, cycling, and moving between a boat, harbour, village, and beach.

It is also a good match for people who want local contact without giving up the scenery. The fishing village and Viet Hai visit add context to the limestone views, while the guide explains Vietnamese culture and life along the route.

Vegetarians have a clear advantage here because vegetarian meals are available, and the food has been praised even by people choosing that option. Couples and small groups may like the calm atmosphere, especially if you want to avoid a crowded party cruise.

This may not suit you if you need a highly predictable schedule. The Ha Long Bay crossing, Dau Be Island visit, beach time, and cave route can all be affected by weather. It is also not suitable for people over 95 years old.

Bring swimwear and sunscreen. Keep your phone number and email correct when booking, since they are required contact details. Cancellation is allowed up to 24 hours before departure for a full refund, and you can reserve now and pay later.

Should you book the Cat Ba plankton excursion?

Book it if you want quiet bays, several hands-on activities, and an unusual night on the water. The plankton paddle is the signature moment, while the floating village, Viet Hai cycling, seafood meals, and hidden lagoons give the rest of the trip substance.

Before paying, confirm two points: where you will sleep and what happens if weather blocks Ha Long Bay or Dau Be Island. If you accept some schedule flexibility and do not expect a luxury cabin, this is a strong-value way to see the Cat Ba side of northern Vietnam.

FAQ

Where does the tour start?

It starts at the Cat Ba Smile Tours office at 204, 1/4 Street in Cat Ba Town. Pickup is also available from hotels in Cat Ba Town.

Where does the tour finish?

The activity ends back at the Cat Ba Smile Tours office. The planned return is around 3:30 PM on the second day.

How much does the excursion cost?

The listed price is $110 per person.

Is the entrance ticket included?

No. The entrance ticket costs $16, or 400,000 Vietnamese dong, and is paid separately.

Are meals included?

Yes. Meals include lunch and dinner on the first day, breakfast and lunch on the second day, and traditional Vietnamese dishes with seafood and vegetarian choices.

Are drinks included?

Bottled water is included. Wine, beer, and soft drinks cost extra.

Is kayaking included?

Yes. Kayaking is included on both days, including the cave and lagoon area, Ho Ba Ham, and parts of Lan Ha Bay.

Can I see bioluminescent plankton?

The evening program includes kayaking to look for bioluminescent plankton. You can also try squid fishing. The plankton viewing depends on nighttime water conditions.

Is the guide English-speaking?

Yes. The guide speaks English. Guides associated with this experience include B, Chilly, and Moka.

What should I bring?

Bring swimwear and sunscreen. You also need to provide your phone number and email when booking.