Bio Bay Kayak Tour in Fajardo
Overview
Available languages
2 hours
Mobile ticket
Max weight per person is 240, to assure weight restriction is met, guests will be weighed on site.
Come on the only tour that has a Marine Biologist as your tour guide. They will explain all the processes involved and the unique conditions required for this supernatural phenomena to occur. Your marine biologist will also explain how this delicate ecosystem maintains a pure balance and what must be done to preserve and protect the Bio Bay “Laguna Grande." It is a very special place on Planet Earth! All gear, snacks, and kayak lessons are included. Minimum age is 6 years old. Children under 6 years of age are not permitted on any of our tours.
Additional Info
Not recommended for pregnant travelers
Not recommended for travelers with spinal injuries
Not recommended for travelers with poor cardiovascular health
Service animals allowed
Public transportation options are available nearby
Travelers should have at least a moderate level of physical fitness
RESTRICTION: weight limit of 240 lbs PER PERSON. NO EXCEPTIONS. To assure weight restriction is met, guests will be weighed on-site. No participation allowed over the weight limit.
Minimum age 6 years
For safety reasons pregnant women cannot participate. (NO EXCEPTIONS)
Our kayaks are all tandem kayaks for two people - you are booking per person not per kayak. If one space is left, that means there is 1 space on a tandem kayak.
Guest under 18 yrs of age must be accompanied by an adult.
The owner of the service animal must provide a Licensed Life-vest by the Coast Guard for the animal. The animal must be in total control all the time. Keep in mind that there will be many people around in the dark.
Guest that are not able to complete the tour for any reason will not be provided a refund of any type.
All guests must be able to row their kayaks by themselves. One of the requirements is that you are able to get in and out of the kayak on your own and be able to maneuver it. If you are an unexperienced kayaker we highly suggest you choose the earlier tour.
If one space is left, that means there is 1 space (for 1 person) on a tandem kayak (No single kayaks available). You will be accompanied by another guest on the tour.
All guest must arrive 30 mins before the start of their tour. We respectfully will not accept or wait for any guest after this time.
If necessary, a tarp (canopy) may be used during the excursion to block any light pollution and enhanced the experience.
In order to best appreciate the bioluminescent phenomena our tours run at sunset and early evening and it can get quite dark in the mangrove canal. So, if you are afraid of darkness, a first time kayaker, or have small kids we strongly suggest taking the earlier, sunset trip. This way you can see where you are going, get use to the environment and sharpen your kayaking skills
Due to the immense popularity the Bio Bay tour, at times can get crowded. It’s not uncommon to meet up with other tour groups waiting to access the canal leading to the lagoon. There can be bumping other kayaks along the way.
Please keep in mind that this tour takes place in a natural environment and that the bioluminescent phenomenon, although rare, can be seen year round. The intensity of brightness is unpredictable and can vary from minimal to very bright suddenly.
SPECIAL NOTE: We encourage our guests to not reserve the tour on the same day of arrival to the Island, including coming from Vieques or Culebra. If the FLIGHT or FERRY is delayed and the guest misses the tour the guest will not be entitled to a refund or rescheduling.
TOUR TIME might change depending on sunset time. If so we will send a reminder for updated meeting time.
This tour takes place in the water. Expect to get completely wet. Wear clothes and shoes that can get wet. We recommend to bring a change of clothes and towel for after the trip.
Tour is not canceled in rainy days. We will get wet anyways ;)
There are public bathrooms on-site, but they are not always in good condition. You may consider stopping in fast food before getting to the meeting site or using the bathrooms from the nearby stores/restaurants which are sometimes available.
Certain time of the year great amounts of sargassum (seaweed) arrive to our coasts. This can make paddling to feel like a workout. Also the natural decomposition odor might be unpleasant.
Even if Viator system allows the guest to write weight over the limit, it will still be 240 lbs the weight limit.
No Expecting Mothers
For safety reasons, children under 6 years old CANNOT participate in PURE ADVENTURE tour.
Those who have epilepsy, back problems, claustrophobia, heart conditions, dizziness, recent surgery or any other condition that may put life in risk are not allowed to participate in PURE ADVENTURE tour.
RESTRICTION: weight limit of 240 lbs per PERSON, not per kayak. To assure weight restriction is met, guests will be weighed on-site.
Not recommended for travelers with heart problems or other serious medical conditions
Our offices are closed on SUNDAYS - Reservations made Saturday after 5 pm will not be revised until Monday at 9 am. For cancellations request during this time please send us a message through Viator.
It is the guest responsibility to comply with health and weight requirement.
Even if Viator system allows the guest to write weight over the limit, it will still be 240 lbs the weight limit.
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
What To Expect
Prepare yourself for an experience of a lifetime! Bio Bay trip includes all required safety equipment, specialized equipment, professional guides, water and light snacks, bug repellent, kayak “Lesson 101”, safety orientation, and a lot of fun! Bring extra clothing and a towel because you will get wet! We will kayak through a canal surrounded by mangrove forest (approx. 1 mile) long to reach the bioluminescent lagoon. MAX WEIGHT PER PERSON is 240. To assure weight restriction is met, guests will be weighed on site. Keep in mind members should be able to row their own kayaks. Earlier tour is excellent for 1st-time kayakers, families with kids, & anyone that really enjoys being close to nature. As the sun goes down, you'll be able to enjoy the majestic view of the mangrove forest. Later Bio Bay tour is excellent for experienced kayakers. Expect total darkness. You'll be able to enjoy the tranquility of the lagoon under the night skies full of stars. All tours are led by an interpretive Marine Biologist trained in 1st Aid & CPR. The tour is suitable for guests 6 years and up. Please refer to the health restrictions details before booking. This is a 2-person kayak tour.
What‘s Included
Professional guide
Snacks
All necessary gear
Gratuities
Please contact us if round trip transportation is needed. Minimum of 4 guests. $39.02 per person round trip. Tax included.
Options
Fajardo Bio Bay Kayak Tour
Important Notice: Restrictions: Max weight per person is 220 lbs, guest will be weighed onsite NO one under the age of 6 & pregnant women cannot participate
Reviews
1,462 reviews
Total reviews and rating from Viator & Tripadvisor
Fun night kayaking experience.
O4595AErebeccal,,Jan 11, 2026
- Review from Tripadvisor
5.00Eli, Michael, Yadiel, Amaury and Catalina ran such a fun and educational night tour to see the bioluminescent dinoflagellates. It was well organized and exceeded my expectations. I really liked how we had some time while out in the bay to distance ourselves from the other kayaks and enjoy the glow and sounds of the water. Thank you!
Great time!
X6736ILaudreyg,,Jan 10, 2026
- Review from Tripadvisor
5.00Had a great time on the bio bay tour. Check-in with Catalina was simple and easy. Amaury, Eli, Yadiel, and Michael were fantastic guides, helpful when they needed to be and fun/irreverent for an easygoing vibe. They were so knowledgeable about the marine biology and even taught us about some constellations. The kayaking was challenging at times with crowded canals or low hanging branches, but overall great experience.
Great tour!
Scenic48949882112,,Jan 10, 2026
- Review from Tripadvisor
5.00We had a great kayak to the bio bay even with a full moon. Pure Adventure was one of several kayaking companies out on the bay, but they were the only tour that turned off our kayak lights to improve visibility and brought a tarp we could put over our boats to simulate darkness. Amaury, David, Yadiel and Catalina were great. A special shout-out to Javier who knew a lot about marine biology, answered all our questions, and even showed us an iguana he spotted sleeping in a tree. The actual kayaking was straightforward, but I would not advise this for brand new kayakers. There isn't any current to struggle against but the path through the trees is very dark at times and tandem kayaking can be a little tricky.
Once in a lifetime experience!
serinabeana,,Jan 10, 2026
- Review from Tripadvisor
5.00Such an incredible experience! The bioluminescent bay tour with Pure Adventure Kayaking was amazing. Javier, Eli, Yadiel, Amaury and Catalina were super helpful and informative. My titi and I struggled a bit with kayaking, but Javier was so patient and even tied onto us to help us along—above and beyond service! The water wasn’t as glowy as I’ve seen online but when putting our hands in the water we could see the glow. We loved every minute of it and would absolutely do it again. Highly recommend!
Great experience
Julie R,,Jan 4, 2026
- Review from Viator
5.00Kayaking through the mangroves was really beautiful. The bioluminescence wasn’t super bright the night we went due to lower rainfall and th moon being almost full. Never the less we had a great experience. I would do it again.
Nice time, but not bioluminescence
Mary M,,Jan 2, 2026
- Review from Viator
3.00Javier and his co-workers were great. They were knowledgeable, helpful, and fun. The paddle through the mangroves was a delight, especially seeing the damage done by the hurricanes 8 years ago. However, the bioluminescence was a total bust. The moon was at 90% making the sky too bright, so they brought out a tarp. Even under the tarp there was only a little shine from moving the water. Coming back through the mangroves in the darkest sections there was still very little shine. So be prepared for a nice time, just not what it is billed to provide.
A fun tropical evening water adventure
Cindy B,,Dec 30, 2025
- Review from Tripadvisor
5.00Our family had a great time on the bio-bay tour. The crew of five (David, Javier, Eli, Amaury & Catalina) were friendly, helpful and knowledgeable, from check-in, to instruction on kayaking, the glowing creatures as well as astronomy. They provided all with a wonderful experience. It’s challenging to kayak in the dark, but the glowing lights and verbal instructions made for an easy adventure. We recommend this tour even if you’re not experienced at kayaking.
The experience feels...
Lily O,,Dec 30, 2025
- Review from Viator
5.00The experience feels unreal and magical! The moon was pretty bright so a tarp was used to enhance our experience once we arrived at the bio bay. Kayaking in a mangrove canal at night was also quite fun. Our tour team (Javier, Amaury, Yadiel, Michael and Catelenai) ran the group (about a dozen double-person kayaks) very efficiently. Highly recommended!
Can’t miss!!!
laura d,,Dec 30, 2025
- Review from Viator
5.00This was a great tour! We chose the 6pm one because it allows you to enter with daylight, arrive to the lagoon with some light still and wait for sun down, and then when you return you are already familiar with the trek back. The guides were animated and knowledgeable, they share about the flora and fauna and they were even pointing out the stars and constellations for us! The night we went the moon was full and bright, beautiful to be in a lagoon but not the optimal conditions to see the bioluminescent organisms. The guides placed tarps over our canooes to create a dark environment and we were able to experience the luminosity of the organisms in the water. Highly recommended 😀
Enjoyed this unique tour
Curt L,,Dec 28, 2025
- Review from Viator
5.00I had an amazing experience on the bioluminescent bay kayak tour in Fajardo! The guides were super friendly, knowledgeable, and made sure everyone felt safe and comfortable, even if you’ve never kayaked before. Paddling through the mangroves at night was truly magical, and the bioluminescent water glowing under our paddles was an unforgettable sight. The tour was well-organized, and they provided all the gear we needed. While the glow can vary depending on the moon and weather, the whole adventure — from the kayak ride to learning about the local ecosystem — made it totally worth it. If you’re looking for a unique nature experience in Puerto Rico, I highly recommend booking this tour.
From US$66.90
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