San Juan

Bio Bay Night Kayaking with Transportation from San Juan Area

Badge of ExcellenceSan Juan, Caribbean
Bio Bay Night Kayaking 6 00pm with Transportation from San Juan area

From $100.00

Select Date and Travelers

Free cancellation
Up to 24 hours in advance.
  • 4 hours
  • Pickup offered
  • Mobile ticket
  • Offered in: English


Experience the natural phenomenon that is Bio Bay on an evening kayak tour. Head from San Juan to Fajardo and in the late afternoon and board your kayak. As you paddle through the mangrove forest, the microscopic organisms in the water become illuminated, creating a magical effect. Learn about the bioluminescent creatures as well as the surrounding environment from your tour guide as you kayak.
  • Kayak through the bioluminescent waters of Bio Bay
  • No prior kayaking experience is necessary
  • Learn about the phenomenon from your tour guide
  • A small group ensures a personalized experience

What's Included

  • Round Trip Transportation
  • Guided Night Kayaking Eco-Adventure at the Bioluminescent Bay of Laguna Grande Mangrove Reserve.
  • 101 kayaking lesson.
  • Life jacket – US Coast Guard Approved.
  • Two person sit-on-top kayaks
  • Max weight 250 pounds
  • Must be able to swim to join this tour.
  • Mosquito repellent is not provided.
  • Waterproof cell phone pouches are not provided.
  • Gratuity is not included, but greatly appreciated.

Meeting And Pickup

Pickup points

Select a pickup point

Start time

07:30 PM

Pickup details

Pickup time 4:00pm from La Concha Resort, San Juan or 4:30pm from Fairmont El San Juan Hotel. PLEASE YOU NEED TO CALL US TO CONFIRM PICKUP TIME AND LOCATION. For your convenience you can bring towels and change of clothes. Thank You!

What To Expect

Laguna Grande

2 hours Admission Ticket Included

Additional Info

  • Confirmation will be received at time of booking
  • Not recommended for travelers with back problems
  • No heart problems or other serious medical conditions
  • Not recommended for pregnant travelers
  • Service animals allowed
  • Not wheelchair accessible
  • Travelers should have a moderate physical fitness level
  • Weight limit is 250 lbs. per person.
  • This tour/activity will have a maximum of 12 travelers

Cancellation Policy

You can cancel up to 24 hours in advance of the experience for a full refund.

  • For a full refund, you must cancel at least 24 hours before the experience’s start time.
  • If you cancel less than 24 hours before the experience’s start time, the amount you paid will not be refunded.
  • Any changes made less than 24 hours before the experience’s start time will not be accepted.
  • Cut-off times are based on the experience’s local time.
  • This experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.
  • This experience requires a minimum number of travelers. If it’s canceled because the minimum isn’t met, you’ll be offered a different date/experience or a full refund.

Traveler Photos

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Featured review
Tour guides were very helpful and informative (thanks Emily!). Getting to see the bioluminescence was amazing, recommend this.


102 reviews
Total review count and overall rating based on Viator and Tripadvisor reviews
Reviews by Viator travelers.
Showing 1-10 of 102 reviews
Big Fun 2.0
Tiffany_D, Sep 2023
An excellent time. The 2nd time we’ve done the bio bay tour. They’re pretty much the same, but this one is family run and I love their vibe. Definitely recommend. (Pls get your driver to wear his seat belt though).
Definitely recommended!
Lisa_S, Jul 2023
The lagoon was so cool—so interesting and weird and beautiful. The driver was very nice, the ride was comfortable and on time, and the guides were informative and helpful. It was a great experience over all.
We had an excellent time...
Kathryn_H, Jul 2023
We had an excellent time kayaking to the bay and seeing the biolumiescence! Our guides did a great job of helping us along the route to and from the bay.
Kayak tour is great. Impatient transportation
Shawn_C, Jul 2023
The kayak tour was great. The hosts were friendly, helpful and knowledgeable. My only complaint lies with the transportation driver. He called me 5 minutes before our meeting time and told me he was early. Because of traffic he wanted to depart right away. I told him that I planned on the meeting time and would be there on time, which I was. After the kayaking we were waiting for the restroom to become available to change clothes as recommended when booking. While standing in line, the driver was about 10 feet away YELLING that it was time to leave. I askeif we had time to change and his response was, "I'll wait again". He didn't wait the first time because we weren't late. On the ride back, her pointed out the area he lived, how far back his drive was, and how late it was. I highly recommend that the driver stick to the schedule and stop being impatient.
The crew was amazing and...
Malik_W, Jun 2023
The crew was amazing and helpful from start to finish. It was a first time experience for us and the crew was great in making sure we felt comfortable and safe.
Rained on our parade
Roshawn_T, May 2023
Unfortunately our experience was outweighed by a thunderstorm in the middle of the river so that put a damper on it. However, our tour guides were amazing and made sure we made it back safely. I would not recommend this tour in the rain.
Be prepared
Rita_C, May 2023
Not for the faint of heart by any means. The first half was easy enough and the Bio Bay was cool. The guides were helpful and so friendly but the trip back, WOW. I was not prepared for the upper body strength I needed for that trip and ultimately, they had to tow us back.
Memorable boi bay night kayaking.
Richard_N, May 2023
Getting lost in our kayak in the channel through the mangroves, in almost pitch blackness. This was a physically demanding excursion, lots of heavy paddling against the tide. Good workout.
A huge disappointment..,
8jf7g4mvvx, May 2023
I came to Puerto Rico entirely because of my desire to see this phenomenon (no disrespect to Puerto Rico, which is beautiful, but this was 100% the deciding factor in where I chose to take my first full vacation in 3 years). The bus ride to the tour was completely silent - the driver made no attempt at pointing out even the biggest, most obvious points of interest along the way on an hour long drive. The most animated part of the trip was them repeatedly reminding us that we would be abandoned in Fajardo if we weren’t back on the bus 15 minutes after the kayak tour ended. Then we were “taught” how to kayak by the guides having us stand in a semi-circle on dry land while they showed us how to hold the paddle and said which direction to paddle to go left, right, and slow/stop. There was zero practice in the water. Once we were in the boats it was time to go. I’ll admit that I had a bumpy start. As the only person with no kayaking experience and the only person without a partner, I was entirely on my own figuring the kayak out. I definitely got caught up a couple of times early on but considering that I was brand new and I managed to get myself back on track I felt pretty good about working to develop a new skill. When we made it to the lagoon we were given time to paddle around and once I was out in the open I was actually fine. I enjoyed practicing further and watching the sunset. Then it was time to finally see the bioluminescence… except we couldn’t. I mean you could make out the occasional spark if you REALLY reached in an agitated the water but only if you did it while under a tarp, which made getting a good look nearly impossible. I felt like we were out much too early to get enough darkness and there was too much light pollution. The tour should really start later in the summer to get any real opportunity to see what the excitement is all about. Then before it was really dark enough to enjoy anything it was time to head back. Now, over the course of the previous hour I had improved and some of the other guests had started to run into issues themselves - they had also ended up caught on trees or started paddling too quickly and hit one another by not leaving any room for the group ahead to slow down. My earlier mistakes had forced me to learn how to back up and when to make room for others, etc. so I was okay pausing to let others get back into line or moving out the way. We’d been told repeatedly to stay in a line so that other tours could pass on the outside, but several folks start to clump up instead and rather than hanging back to get into formation, those people just tried to go around the rest of the line. I ended up getting hit not once, not twice, but 3 times as other people focused more on getting ahead than making sure we followed expectations. As a result, I got rammed nearly ashore but I was okay with doing the work to get back on track. It would have been a little tough but not impossible and I’m not one to just give up. Instead, before I could maneuver my way back out, one of the guides said they were going to give me “a little help” which turned out to be towing me the entire way back. It felt infantilizing to have someone first ignore that I was repeatedly rammed into by other guests because I was allowing another kayak to enter the line (as was asked of us) and then take over the entire rest of the way without asking if I wanted that. If he’d just wanted to get me recentered that would be one thing but it felt really awful to be improving at something and have the opportunity to get better taken from me. Don’t get me wrong, the guides were nice people, but it was frustrating that instead of reminding others to be mindful of their surroundings I was towed back like a child. All together, it was a really deflating experience to come all this way, excited to see one of the world’s coolest natural wonders, and both not see it AND get the rest of the activity taken away too.
Tour was great! Beautiful...
Lauren_B, Apr 2023
Tour was great! Beautiful scenery and we were able to see the bio luminescence just by moving the water around! Great experience!
I would suggest going after 6
Joao_C, Apr 2023
Emily and her captains were professional. They all had a good sense of humor . I would recommend getting your trip a week or 2 weeks early for more times
Biochemist bucketlist
KimberlyJacobyMorris, Apr 2023
I thoroughly enjoyed this experience. I am a biochemical scientist so this was on my nerdy-bucketlist. The tour guides were great and kept the group moving. Viewing the microbes under the tarp really enhanced the luminescence. I was surprised to see the range of the wavelength emission. I was expecting blue but we saw neon green/yellow. We got picked up promptly at 4 pm. The tour guide was very communicative regarding pick up. It took 1.5 hours to arrive in traffic. After the waiver signatures and life jacket fitting we were in the water by 615-630. We finished about 8pm. Would recommend this group to tour with. In hindsight I think we should have rented a car and driven to the site rather than paying so much for the transport cost. The driver , raphael, was excellent.
Horrible excursion
Tom_N, Apr 2023
This trip was not what was advertised. I am a science teacher and was excited about sharing bioluminescence with 17 people. Daytime conditions had been perfect. The lake should have been teeming with bioluminescence. There was none and hiding our heads under tarps was not the answer. It was a 4 hour tour. One hour and 15 minute bus ride each way. Stand around and wait for thirty minutes. A super waste of time.
Response from Host, Apr 2023
Greetings to all. The amount of bioluminescence or the weather, for that matter, is not something we manage. Natural life as it is - The bioluminescent intensity is influenced by environmental factors such as rain, tide, moon phase, sunlight, and many other natural phenomena that Puerto Rico Access Tours cannot regulate. On our website,, we do not use photoshop. We have no influence over where you choose to stay while you are in Puerto Rico. If you stay in San Juan, it will take you an hour and a half to get from there to Fajardo by bus. Every participant must complete a safety briefing and a kayaking 101, and it's good to stretch your feet after riding the bus for one hour and 15 minutes. Nature activities is not for everyone! Thank You
Fun experience, would do it again!
Austyn_W, Mar 2023
Emily was an awesome guide along with the others. We had a great time!!! Good directions and guidance even for people who don’t have kayaking experience.
Paddling through the ...
Wendy_K, Mar 2023
Paddling through the mangrove trees was cool. The bay was beautiful even bore the illuminesence. We were told there would be bugs. But I encountered none.
Just okay
Deborah_Z, Mar 2023
Kayaking through the mangroves was cool, but the luminescent organisms were tough to see due to the full moon and city lights. We did see some tiny sparks when we put the tarp over our heads and splashed our hands in the water. Overall it was kinda cool but I wouldn’t do it again.
This tour was fantastic!...
Sarah_R, Mar 2023
This tour was fantastic! Even though the moon was nearly full and we wanted to see more of the bioluminescese, the guides made sure we got the most out of the experience. The kayaking and bay were gorgeous. Very fun and engaging guides. Highly recommend. Particularly during non-full moon phases :)
Diamonds in the water!
lkcothran, Mar 2023
Our guides, Emily & Samuel, were very engaging and helpful each step along the way throughout our experience. The two- person kayaks were great and ours was roomy for two tall people. It was pretty dark kayaking through the mangrove forest but everyone knew what to do to follow and make all the turns! We gathered in the middle of the lagoon for a lesson about this wonder of nature. We did use tarps to hide the moon and see the explosion of diamonds in the water! An unforgettable experience! Even though we had an accident with the van coming to the bay which made us late - it all worked out. I would have liked to actually see the mangrove forest but it was too dark by the time we started. I would definitely try this again someday!
Great tour company, but must have the right expectations going into the bay
Alex_S, Feb 2023
Amazing tour guides, but do not go into the experience thinking there will be lots of light in the water - it is more like small electric sparks. Still a great experience though if you’ve never been to a bio bay before. One of our tour guides picked up a jelly fish for us and we got to pass it around and see it light up. That was a great addition and a cool experience :)
Swirling the stars!
Carl_H, Feb 2023
They provided the tarp for us which was ingenious so that we could experience the bioluminescence better!!

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