Puerto Rico Bio Bay Kayak Adventure Tour

Overview

Available languages

English

Spanish

2 hours

Mobile ticket

Want a glowing and unforgettable night? This Bio-Bay Kayak Tour is what you need!

On this tour, you will cross a canal inside the nature reserve that is surrounded by various types of mangroves. This protects from strong winds and helps you to paddle easily in peaceful waters.

The best part of this tour is to enjoy the incredible glittering water of the "Big Lagoon"! Tiny bioluminescent organisms called "pyrodiniums bahamenses" are the responsible for this wonder of nature. They produce blue-green light from top to bottom of this bay every time you touch or move the water with your kayak!

Additional Info

Wheelchair accessible

Not recommended for travelers with spinal injuries

Not recommended for travelers with poor cardiovascular health

Travelers should have at least a moderate level of physical fitness

Children must be 6 years or older

Maximum weight per person is 245 pounds. For safety reasons, customers will be weighed at check-in.

Bioluminescent is a beautiful experience and with or without moon we could use a tarp.

Kayaks are double (2 people per kayak). Odd numbers groups will be paired with another person on the tour. Single kayaks cannot be guaranteed to odd numbers. Children will only be assigned with their parents or family member of the same party.

All participants must be able to row the kayak and complete the tour.

Participants under the influence of drugs or alcohol, or with any type of misconduct won't be allowed.

The Bioluminescent effect is a natural phenomenon that varies continuously and cannot be predicted nor 100% guaranteed.

Pregnant travelers cannot participate

Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

What To Expect

Laguna Grande

Our experienced guides will show you the wonders of the natural reserve, including paddling between a mangrove canal and getting to the bioluminescent bay. Once at the bay the guides will detailed explain you the ecosystem and all the surroundings.

30 minutes • Admission Included

What‘s Included

water and light snacks

Explanation of the Bioluminescet Bay's surroundings and ecosystem.

Professional and experienced guides

Kayak, paddles, USCG life jackets and backrest

Complete explanation of the use and safety management of kayaks and equipment.

Gratuities

Options

Bio Bay Kayak Tour Fajardo

Reviews

4.59

1,599 reviews

Total reviews and rating from Viator & Tripadvisor

1271

154

Kayaking through the...
thomas s,,Jan 12, 2026
- Review from Viator
5.00
Kayaking through the mangroves out to the bay with my family was great ! The bioluminescent was awesome in the bay. Willie our guide was great ! Definitely a must do
Plenty of help for the non-athletes
G8618JRsa,,Jan 10, 2026
- Review from Tripadvisor
5.00
As a healthy but non-athletic family of four, ranging from preteen to middle aged, we were a little nervous about kayaking in the dark, but they sent four experienced people with the group, and helped anyone who got stuck. For beginners, the route is tricky, and we ran into each other and trees a lot. But there was always a staff member there with a light to help us get out of whatever we had gotten into. The bioluminescence was incredible, annd well worth the trip. Additionally, we could see so many stars and planets in the sky without light pollution.
Fun, educational and unique experience
Marie J,,Jan 8, 2026
- Review from Tripadvisor
4.00
We were happy with Yokahu Bio Bay Adventure Tour experience. The checkin was challenging online because of a glitch in checkin form but once we were onsite the guys were great. Once out on water they had 3 single kayaks "herding" us into single line to navigate the mangove channel. Once out on lagoon they gathered all boats and provided tarps to cover our kayaks to get benefit of seeing the bioluminescent in the water. We had perfect evening after dark with no moon so we felt we should have seen more. With tarp it helped get idea but front ends of kayaks were tied together so the front person in kayak didnt have access to water to see. This should be handled differently perhaps tie smaller groups if needed because there were 3 single leaders. This is one reason for 4 rating. It was alittle more challenging than we expected but did it! Definitely a upper body workout against tide.Going in we were against tide and coming out we had more relaxing time going with current. There were too many other groups kayaking in the mangrove channel at once. That was not fun playing bumper cars in dark as we were pushed by other kayaks into mangrove trees multiple times. Glad we did the trip and recommend to try, but once is enough.
Mangroves at night
jimfC1125HH,,Jan 8, 2026
- Review from Tripadvisor
4.00
Although the bioluminescent waters were a bit disappointing, the staff were wonderful. Kayaking thru mangroves in the dark was an experience in itself. Plan on getting wet!
Great experience but difficult to see the glow with the full moon
Malisa M,,Jan 6, 2026
- Review from Tripadvisor
4.00
The guides were great! Better to go when moon is less full to better experience the glow. The only way to see it was with tarps over the kayaks. Also recommend wearing swimwear because you do get wet and that wasn’t very clear in the tour information.
Great time
ericandsaraho,,Jan 6, 2026
- Review from Tripadvisor
5.00
The guides were great! They managed to keep everyone together and showed us an amazing time. Would recommend some kayaking experience, if nothing else, to make the experience pleasant for everyone 😉
Safe, Fun Experience
AJ B,,Jan 3, 2026
- Review from Tripadvisor
5.00
Was anxious about kayaking at night as I’m not that confident in my swimming but Lloyd, Joshua, Jonathan, Jensen, and Williams all made sure we were briefed properly, and everyone was safe and accounted for. Thoroughly enjoyed and would highly recommend.
Kayak tour is so great!!!
alexdemeritt,,Jan 1, 2026
- Review from Tripadvisor
5.00
The tour guides were great and the experience was amazing!! Well worth the drive from San Juan. The 5:45pm start time was also great because we caught the sunset on the water
Beautiful evening paddling in the mangroves
GraceNYC2010,,Dec 30, 2025
- Review from Tripadvisor
5.00
Very well-organized, professional and fun guides - beautiful to paddle into the mangroves at night. The bioluminescence was challenged due to the moonlight, but the guides brought black tarps which helped.
fun kayak trip with really nice guides but not much bioluminescence
317lulu,,Dec 24, 2025
- Review from Tripadvisor
4.00
overall good experience! all the guides were chill and fun. the kayaking was a little physical so watch out if you’re not up for it. however the bioluminescence was minimal and you have to see it while covered under a tarp (better than not seeing it at all) but just temper expectations. the whole thing took a little over an hour and they gave us snacks and water after