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Embark on a mesmerizing adventure with our Bio Bay tours, where you'll glide through the bioluminescent waters of Mosquito Bay and witness the breathtaking glow created by tiny organisms called dinoflagellates. These microorganisms emit light when disturbed, creating a magical display as each paddle stroke ignites trails of sparkling blue.
Travel Notice: If returning to Puerto Rico on the late ferry, book our 6:30 PM tour Monday- Sunday. Coordinate transportation in advance.
Ferry Ticket Recommendation
Secure your ferry tickets when you book your tour. For the best chance of a seat, purchase in person at the Ceiba ferry terminal. Our tours require a minimum number of participants and may be rebooked or canceled if that number isn’t met. Travel light and bring only essentials. By arranging both your tour and ferry tickets early, you can relax and enjoy your adventure worry-free!
Public transportation options are available nearby
Infants are required to sit on an adult’s lap
Not recommended for travelers with spinal injuries
Not recommended for pregnant travelers
Suitable for all physical fitness levels
For a full refund, cancel at least 24 hours before the scheduled departure time.
Embark on a mesmerizing adventure with our Vieques Bio Bay tours, where you'll glide through the bioluminescent waters of Mosquito Bay and witness the breathtaking glow created by tiny organisms called dinoflagellates. These microorganisms emit light when disturbed, creating a magical display as each paddle stroke ignites trails of sparkling blue.
Glass Bottom Kayak
Round trip transportation from the meeting point to the Biobay and back.
Tour Guide
Life Jacket
86 đánh giá
Tổng số đánh giá và xếp hạng từ Viator & TripAdvisor
Freedom763917,,12 thg 1, 2026
- Đánh giá từ Tripadvisor
Kayak experience was nice and company did provide equipment and tour guide. We did see “glowing water”. No fish really. Clear beautiful sky. The catch - the timers don’t include any basics. For ex. You need ferry tickets to the island which may sell out. They only see a certain amount online and then you’d have to go to ferry and hope they have some. We stayed in San Juan. Ferry is 1.5 hours away approx. the ferry dos not allow rental cars. When you arrive at ferry you are 10 min drive away from meeting place. They should have included transportation to their pick up spot !! - which was called “abandoned lot” - did not make it easy to describe to a taxi. Which is exactly how we got there and back. We really had to figure it out as we went and all of the participants were really worried we’d miss the ferry out off the island which would leave us with no where to sleep. Maybe I’m a worrier , but I expected more logistical help with details and feel the tour was expecting too much from visitors to figure this all out.
Patricia F,,3 thg 1, 2026
- Đánh giá từ Viator
The outing was quite well organized. The moon was clear so the bioluminescence not too visible. But we had a tarp to see better underneath. The guide was nice. However, you might as well book directly with agencies and not Viator. They're not being honest. We have a refund problem with them.
JoseLuis S,,1 thg 1, 2026
- Đánh giá từ Viator
Very professional and punctual both in the transfer and in the activity, but I think that it should not be done on days that there is half a moon or more, because it will hardly see the luminescence
lilybM4779YJ,,29 thg 12, 2025
- Đánh giá từ Tripadvisor
It was absolutely amazing, everyone was extremely nice, and cared about our experience. Being able to see the bioluminescence was a highlight of our trip to Puerto Rico. Be warned no matter which you company you go with the ride to the bay is rough and bumpy. I would discourage anybody who has any serious health conditions or injuries from the activity because of that drive unfortunately. Also be warned, you will have to take off your shoes and then wade into the rocky beach to board your kayak. The guide took us to a point deep in the bay where they found a spot with strong bioluminescence and let us mostly free to discover the area as we pleased. Definitely wear clothes you are okay getting wet. We were sitting in water in our kayaks during the entire trip. Also, try to book when there is a new moon so you can see the the glow best.
Saravana K,,29 thg 12, 2025
- Đánh giá từ Viator
I understand that we were not able to reach 24 hours prior to the event, but it was last minutes kids fell sick. I called them and they offered to talk to the owner to consider at least partial refund because we were a large group and we paid almost $650 for all of us. This is a courtesy request because of the huge amount involved.
Claire P,,28 thg 12, 2025
- Đánh giá từ Tripadvisor
The biobay experience was wonderful. The guides Mayra, Yarial, and Esteban were wonderful. Angel in the office answered all my questions and ensured my family could be together. We were able to go on a Sunday night after a day trip and make the 9 pm ferry back to the mainland. Make sure you check the lunar calendar before you go as we had a half moon and the bioluminescence was not as impressive.
Gloria T,,28 thg 12, 2025
- Đánh giá từ Viator
If you are coming back on the ferry, no later than a 6:30 tour to make it to the 9:00 ferry. Get your cab ready for pick up at the ferry and for pick up after the tour at the green store. It’s cold on the ferry on the way back since you will be wet so change clothes or bring a blanket. The actual tour was relaxing once you got on the water, but chaotic up until that point. The clarity of the stars, the moon, and the sound of the water brought serenity. Yes, there is some glow, but don’t expect it to be lit up. When you move your oars is when you see the bioluminescence. If I come back to PR, I would likely skip it or try for the tours from Fajardo.🤷🏻♀️

keithhS8746VG,,27 thg 12, 2025
- Đánh giá từ Tripadvisor
A calm dark night with warm water, the light paddling was easy. We departed at 6:30 PM and returned at 8:10 PM a much shorter trip than we were promised. educational presentation lasted about two minutes. We were not told what to bring, and had difficulty finding the meeting point as even the locals didn’t know how to interpret the directions.
hmpw6fx6ck,,21 thg 12, 2025
- Đánh giá từ Viator
It was very unorganized! First - in the description it tells you really nothing to expect or what to bring or not to bring, what to wear or not to wear Secondly - for people (such as myself and my family) that had never kayak prior, they didn’t seem to care and just took off and left us behind. Then, the ‘assistant’ was more worried about being on his phone than actually helping anyone. My husband ended up having to go back prior to the end and he did what was told of him; tell someone, don’t just go back. Yet the assistant just said go that way and that way and you will get there and made him go back alone….why, because he was more worried about being on his phone! No one helps you in or out of the kayaks and with them being soaked, you slip so I twisted my ankle getting in but why would they care?! And getting out I almost fell into the water but I was taking too much time so I was being yelled at by the assistant. The bus ride was the icing on the cake - 10 mins of driving down a dirt road with legit pot holes the width of the road / people going both directions and praying you don’t get stuck in said watery pot hole since you are so far in the woods so you don’t collide with the person coming head on in your direction •••• SCARY! It was neat seeing the Bio Luminescent Bay but defiantly not worth $240 / seeing it was the New Moon, I defiantly expected more of a ‘WOW’ factor but it was neat.
James R,,19 thg 12, 2025
- Đánh giá từ Viator
We had a disappointing experience. The location was very hard to find, with no clear signage—just a piece of paper with our names on it, unlike other nearby companies. Transportation was in an old school bus, and the ride was extremely bumpy and, at times, scary. The tour itself felt disorganized. The guide was very soft-spoken and hard to hear, and with seven kayaks, the experience felt rushed and impersonal. While the activity was okay, other groups nearby were far more organized with better guides. Overall, I would not recommend this tour.
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