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

The best part of this trip happens after dark, when you paddle or kayak across the quiet bay and stir the water to reveal tiny flashes of bioluminescent plankton. I like that unusual moment, and I like the route through southern Lan Ha Bay, where the pace is calmer and the coves feel less crowded than the better-known Ha Long Bay stops. The main thing to clarify before paying is your sleeping arrangement: the advertised floating homestay may mean a boat cabin rather than a room in a floating village.

I also like the mix of activities. You are not simply sitting on a boat for two days: you kayak through caves, swim in Cam Lagoon, cycle through rice fields to Viet Hai Village, and visit a quiet beach near Dau Be Island. The trade-off is that weather can change the route, and one reported trip did not reach Dau Be Island or its beach on the second day.

Key points at a glance

• Night kayaking with plankton: Paddle after dark and look for small flashes of blue-green light in the water.
• A quieter bay route: The southern parts of Lan Ha Bay and Ha Long Bay offer a calmer setting than the busiest cruise corridors.
• Two kinds of local life: Visit the old floating fishing village, then cycle inland to Viet Hai Village.
• Active days on the water: Kayaking, swimming, snorkeling, cycling, squid fishing, and deck time keep the trip varied.
• Good food included: Meals feature Vietnamese cooking, seafood, and vegetarian choices, with particularly strong praise for the food.
• Check the cabin details: The overnight stay is described as a floating homestay, but the actual setup may be a room on the boat.

A two-day escape from Cat Ba Town

At $110 per person, this 2-day, 1-night trip gives you a lot for the money. Hotel pickup in Cat Ba Town, all meals, bottled water, kayaking, squid fishing, plankton watching, and an English-speaking guide are included. You still need to add the entrance ticket, listed at $16, or 400,000 Vietnamese dong, and drinks cost extra.

That puts the basic cost at about $126 per person before drinks. For a full day and a half on the water, an overnight stay, several kayak sessions, village visits, and meals, I consider that fair value. It is especially appealing if you want more than a standard day cruise but do not want to pay for a luxury vessel.

This is a small-group experience, although no exact group size is given. That matters here. Kayaking through narrow caves and paddling after dark are much more pleasant when you are not part of a large flotilla. The trip is also aimed at people who enjoy a relaxed pace with plenty of activity, not those looking for a polished resort-style cruise.

Your day begins at the Cat Ba Smile Tours office at 204, 1/4 Street in Cat Ba Town. Pickup from a Cat Ba hotel is also available. The harbor is only about 1 kilometer away, so the transfer is quick, with the boat leaving from Beo Harbour.

Morning through the fishing village and limestone islets

The first morning starts with a cruise through one of Vietnam’s old floating fishing villages. This is more than a scenic pass-by. Your guide explains how fishing families live and work on the water, giving the bay some human context before the day turns toward caves and swimming.

You will pass limestone formations with names such as Turtle Islet, Toad Islet, and Candle Islet. The shapes are easy to enjoy from the deck, and the slow cruise gives you time to take photographs without rushing from one viewpoint to the next.

I recommend staying outside for this section, even if the weather is warm. The value of the morning is in watching the relationship between the boats, the fishing village, and the limestone islands. You can always return indoors later for a rest.

The route continues toward the boundary between Lan Ha Bay and Ha Long Bay. The two areas are part of the same broad limestone world, but the route here emphasizes quieter corners rather than the most crowded sightseeing points. If weather closes part of Ha Long Bay, the boat may remain in Lan Ha Bay. That is not necessarily a poor substitute, since Lan Ha Bay is one of the strongest parts of the trip, but you should accept that the exact route is weather dependent.

Kayaking through Bright, Dark, and Bat caves

The first major activity lasts about 90 minutes. You kayak through Bright Cave, Dark Cave, and Bat Cave, entering narrow passages and reaching sheltered lagoons surrounded by limestone walls.

These are not just photo stops from the main boat. You move at water level, which makes the rock formations feel larger and the quiet more noticeable. The hidden lagoons are the reason to choose this trip over a simple sightseeing cruise. You get to explore under your own paddle rather than watching the scenery pass from a seat.

The caves also make the outing active without being overly demanding. You do need to be comfortable sitting in a kayak and paddling for a sustained period, but the program includes time rather than a rushed sprint between stops. Bring sunscreen and swimwear, and protect your phone if you plan to photograph from the kayak.

The route can change with conditions. One useful point from the experience is that the guide may need to adjust plans when wind or rain affects access to Ha Long Bay. A flexible attitude will make this trip much more enjoyable.

Swimming at quiet Cam Lagoon

After kayaking, the boat heads to Cam Lagoon, a private swimming area in the middle of Ha Long Bay. You get about 30 minutes to swim in clear water, relax, or jump from the boat deck.

This is a good counterpoint to the morning’s paddling. You are not being hurried toward another formal attraction. Instead, you get a simple break in a quieter part of the bay. If you enjoy swimming, this may become one of the day’s best pauses.

You should bring proper swimwear rather than relying on casual clothes. Sunscreen is also essential, since the boat deck can be bright and exposed. The activity includes water time, but snorkeling conditions are not guaranteed to be the same on every departure, so think of snorkeling as a possibility rather than the central promise.

Lunch follows on the boat, with Vietnamese dishes, seafood, and vegetarian options. The food is one of the strongest parts of the experience. It is described as generous in quality, and vegetarian diners are specifically catered for. If you have strict dietary needs, tell the operator when booking rather than waiting until lunch.

From the bay to Viet Hai Village by bicycle

After lunch, you have time to nap, sit on the deck, or take photographs as the boat follows another route toward Viet Hai Harbour. This quieter middle part of the day is useful. Two full days on the water can be tiring, and a short rest keeps the evening activities enjoyable.

At Viet Hai, you cycle across rice fields toward Viet Hai Village. The ride gives you a different view of Cat Ba than the usual sea-and-limestone scenery. Instead of looking outward at the bay, you move through cultivated land and arrive in a rural community where you can walk around and meet local residents.

The village visit is intentionally simple. You learn about daily life and local culture, and seasonal farm work may be available if you want to take part. There is also a fish massage, an unusual local experience that some people will find entertaining and others may find ticklish or strange.

This stop adds value because it prevents the tour from becoming a string of water activities. You see how life on Cat Ba works both on the sea and inland. Wear shoes that are comfortable for cycling and walking, though the supplied information does not specify the exact road surface or bicycle type.

Dinner, squid fishing, and glowing water

By around 6 p.m., you return to the floating homestay for dinner. The meal features traditional Vietnamese cooking, with seafood among the choices. The food is a real strength here, and vegetarian options are available.

The overnight setting needs a little care. The program describes a floating homestay, but the sleeping arrangement is on a boat, and one account described a cabin in the lower part of the boat rather than a room in a floating village. Bathroom arrangements may also be basic. If a private room, window, or particular cabin location matters to you, ask Cat Ba Smile Tours for the exact setup before you reserve.

The night activity is the trip’s signature moment. You can try squid fishing or go kayaking to look for bioluminescent plankton. When conditions are right, small organisms glow as the water moves around your paddle or hand. It is a subtle sight, not a guaranteed light show, but that is part of its charm.

Keep expectations sensible. The plankton depends on darkness and natural conditions, and the effect may be faint. Still, paddling quietly on the bay at night is unusual enough even without a dramatic glow. This is also one reason the trip suits people who prefer calm evenings to music and crowded entertainment.

Sunrise and the three lagoons of Ho Ba Ham

The second morning begins with breakfast, fresh air, and time to watch the sunrise from the boat. The schedule calls for an 8 a.m. start, so you should not expect a long lie-in.

At 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 to relax on a deserted beach, followed by kayaking into Ho Ba Ham.

This part of the trip is meant to feel more remote. You get another chance to paddle among limestone islands, but the focus shifts from the first day’s caves and village life to quiet shore time. A beach stop also gives you a chance to swim, sit in the sun, or simply enjoy a stretch of coastline without a formal attraction around it.

Do keep the schedule flexible. On one departure, only kayaking took place on the second day, with no visit to Dau Be Island or beach time. Weather and sea conditions can affect the plan. If the island and beach are your main reason for booking, ask about current conditions before departure.

Lunch is prepared in a local style. Afterward, the boat returns toward Lan Ha Bay, with more kayaking, swimming at private beaches, sunbathing, and time on deck. The second day is less packed with cultural stops, so you can settle into the bay’s slower rhythm.

Guides, food, and the human side of the trip

The guides are an important part of the experience. Guide B is praised for explaining the bays, Vietnamese life, Cat Ba Island, and the national park. Chilly brings a playful, energetic approach and enjoys sharing local culture. Moka is described as kind, attentive, and discreet.

Those different styles matter because this is not a self-guided boat ride. You spend many hours with the guide, and clear explanations make the fishing village, caves, and Viet Hai Village more meaningful. A warm guide also helps when plans change because of weather.

The food receives unusually strong praise. Lunch and dinner include Vietnamese dishes, seafood, and vegetarian choices. You should still tell the operator about dietary requirements in advance, but vegetarian travelers are not an afterthought on this trip.

The atmosphere is another major advantage. The experience is designed for people who want a quiet cruise rather than loud music or crowded decks. You get long stretches to sit outside, watch the islands, and enjoy the bay without a constant stream of activities being announced.

What to pack and what to clarify

Pack lightly, but bring the essentials:

• Swimwear and a towel
• Sunscreen
• Comfortable clothes for cycling and kayaking
• A waterproof bag or phone case
• A small amount of cash for drinks and personal expenses

You will need your phone number and email when booking. Pickup and drop-off are available within Cat Ba Town, and the tour ends back at the Cat Ba Smile Tours office around 3:30 p.m.

That return time works well if you are continuing by bus. Bus tickets to Hanoi, Ninh Binh, Ha Giang, or Sapa can be arranged for around 4 p.m. I would still allow some flexibility, since boat schedules can shift with weather.

Before booking, confirm three things: the exact sleeping cabin, the current entrance fee, and the likely second-day route. The stated entrance charge is $16, or 400,000 dong, and is not included in the tour price. Drinks such as beer, wine, and soft drinks are also extra.

Cancellation is allowed up to 24 hours before departure for a full refund. The tour is not suitable for people over 95 years old.

Is this two-day bay trip right for you?

You should book this excursion if you want quiet scenery, active outings, and a small-group feel at a moderate price. It suits couples, friends, and solo visitors who would rather kayak, swim, cycle, and watch plankton than spend two days on a large party boat.

The strongest reasons to choose it are the night paddle, the floating fishing village, Viet Hai Village, good meals, and the variety of activities. Guides such as B, Chilly, and Moka add a personal touch, and the calm atmosphere is a welcome change from crowded Ha Long Bay routes.

You may want another trip if you need a clearly defined luxury cabin, guaranteed beach time, or a fixed route into Ha Long Bay. The overnight setup can be basic, and weather may remove some second-day stops. For most people who value unusual experiences over polished comfort, however, the combination of glowing plankton, quiet lagoons, village life, and Vietnamese food makes this a strong two-day choice.

FAQ

Where does the tour start and finish?

The tour starts at the Cat Ba Smile Tours office at 204, 1/4 Street in Cat Ba Town, or pickup can be arranged from a hotel in Cat Ba Town. It finishes back at the same office around 3:30 p.m. on the second day.

How much does the experience cost?

The listed price is $110 per person. An entrance ticket of $16, or 400,000 Vietnamese dong, is not included, and drinks are also extra.

Are meals included?

Yes. All meals are included, with Vietnamese dishes, seafood, and vegetarian options served during the boat and overnight stay.

Is kayaking included?

Yes. Kayaking is included on both days, including cave and lagoon exploration, along with kayaking to look for bioluminescent plankton at night.

Can I see bioluminescent plankton?

You can kayak after dark to look for bioluminescent plankton. The activity is included, but the amount of visible plankton depends on natural conditions.

Is squid fishing included?

Yes. Squid fishing is included as an evening activity, alongside the option to kayak and watch for bioluminescent plankton.

What should I bring?

Bring swimwear and sunscreen. You should also bring your booking phone number and email, plus practical clothing for kayaking and cycling.

Can I cancel for a full refund?

Yes. You can cancel up to 24 hours before the activity for a full refund.