Paddle the lights!

Starting at


USD per person


If you are in Puerto Rico, the Bioluminescent Bay Fajardo is definitely an adventure not to be missed! Kayaking at night time to experience the magic of bioluminescence is a luxury that you will rarely find elsewhere in the planet. So don’t hesitate for a second and join us in our fully-guided kayaking adventure into the bioluminescent glowing waters of Laguna Grande. Here —at the heart of Las Cabezas de San Juan Nature Reserve— you will meet a wonderful marine microorganism that produces a natural light with every stroke of your paddle!

From sunset to mid evening, our famous 2-hour kayak tour will take you on a journey of fresh air, starry night skies, gorgeous tropical marine life, and swirls of lights and sparkles all around you! Led by our certified interpretive guides, our Bio Bay adventure is bound to create memories for a lifetime.


  • Explore the mangrove channel of Las Cabezas de San Juan Reserve
  • Kayak at nightfall through the Bioluminescent Bay
  • Discover billions of sparkling microorganisms
  • Learn about the nature reserve’s fragile ecology and the constellations
  • Enjoy with the best reputed eco guides in Puerto Rico!
  • $48

    Per Person + Taxes & Fees

    Maximum 2 persons per kayak

Tour Duration
2 Hours
Minimum Age
6 years +
Skill Level
Easy (Beginners)
Monday - Saturday
Yes! Pickup available
Launch Site
Las Croabas, Fajardo


Duration: 2 Hours
Age: 6 years +
Skill Level: Easy (Beginners)
Food: Light Snacks and Refreshments Included
Location: Laguna Grande, Fajardo
Launch Site: Las Croabas, Fajardo
Open: Monday – Saturday
Rules: Swimming not allowed
Transportation: Yes! Pickup available

Starting at


USD per person

kayakers entering bio bay's laguna grande channel from above
KPR Tour guide explains biodiversity
Happy couple enjoying their kayak adventure.


  • Kayak and paddles*
  • US Coast Guard approved life jacket
  • Low intensity nighttime navigation lights
  • Training and safety instruction prior to the tour
  • Eco-friendly bug spray
  • Snacks: bottled water, fresh seasonal fruits, protein bars, and other treats
  • KPR’s professional interpretive eco guide throughout the entire excursion
  • First aid and kayak towing equipment
  • Complimentary digital photos of your experience

*Two persons sit-on-top kayaks available. All kayaks, paddles, and equipment are beginner-friendly.


Las Croabas, Fajardo


Our Bio Bay Kayak Tour is an evening adventure! Therefore, the time schedule changes according to the seasons. All guests must be at Las Croabas at the scheduled check-in time. Your adventure will begin 30 minutes after check-in starts. The duration of the tour is 2 hours.

Season Tour Check-in Time
February to May Early Evening Tour 5:45 PM
Mid Evening Tour 8:15 PM
June to September Early Evening Tour 6:00 PM
Mid Evening Tour 8:30 PM
October to January Early Evening Tour 5:15 PM
Mid Evening Tour 7:45 PM


Your Bio Bay Kayak Tour begins at Las Croabas, right next to Las Cabezas de San Juan Nature Reserve. Here our team of professional eco guides will show you all the basics of kayaking, safety, and the rules of the nature reserve. Following this quick training, we will board our kayaks on easily accessible, shallow water and then… off we go into this once in a lifetime adventure!


The magic of Laguna Grande — our astounding Bio Bay— begins at its very entrance: the mangrove channel! This long path of water is bordered by a red mangrove forest teeming with life. Get prepared to feel the pulse of this lush coastal wetland, while it welcomes you to the unique paradise ahead. Your professional eco guides will lead the way and provide ecological interpretation of the ecosystem around you.


After about 20 minutes of paddling, the mangrove channel opens up into the heart of the reserve: the wide space of Laguna Grande. Watch how every stroke of your paddle leaves behind a glowing swirl of blue light, and dozens of sparkles rain from your hands as you come in touch with this wondrous natural phenomenon! Pay close attention, as fishes may pass by your side lighting up their paths like a shooting stars in the water.
Our professional eco guides will share with you the science behind bioluminescence, and all the secrets of the reserve’s wildlife. Then, up our eyes go to the sky! The darkness of Laguna Grande provides the perfect theater for watching the stars, and our eco guides will teach you more about the constellations that grace our night.


As we cruise back through the mangrove channel, surrounded by the nocturnal sounds of nature, you will feel the rush of knowing that you truly explored Puerto Rico’s best-hidden secrets and enjoyed a unique experience rarely found elsewhere in the planet!

Group of happy guests getting ready to paddle the bio bay
Map of the Bio Bay paddling route.
Your Bio Bay tour route
kayaking instructor displays proper paddling techniques


  • Swimwear or clothes that can get wet
  • Water shoes
  • Towel
  • Set of dry clothes
  • Your medicines, if you have a particular condition only
  • Cash for restaurants, souvenirs, tips, etc.


To avoid damage or loss of your gear, we suggest you avoid bringing this items:

  • Insect repellent (we will have an eco-friendly option available for you)
  • Cameras (please read our Photography and Video section below for more details)
  • Jewelry
  • Any valuable that cannot get wet
  • Alcoholic beverages


This excursion is not recommended for guests with physical conditions, epilepsy, back problems, heart conditions, dizziness or that had recent surgery. Pregnant women cannot participate. Please remember that it is your responsibility to notify us ahead of time with any concerns about your health or physical condition.

Maximum weight limit per person is 285 pounds (129 kg). Maximum weight limit per kayak is 485 pounds (220 kg). Minimum age is 6 years old.

This excursion requires a minimum of at least six guests in order to provide the tour. In the event this minimum is not met, we will call one or two days prior to the excursion to go over alternative options (i.e. reschedule for a different date or time that has the minimum requirement, payment options for a private excursion, or cancel without penalty).

Bioluminescence is almost impossible to photograph or record with regular digital cameras, disposable cameras, or cellphones. Therefore, we recommend you to not bring your camera, since everything in your kayak will get inevitably wet and there will be no place to store your camera in the event of heavy rainfall.

As part of our service, your KPR guides will be taking complimentary digital photos of your experience with us in the water. We will upload all the photos taken by the staff to Google Photos and send you a link to the email you provided in your reservation. Please allow 5-7 business days for the pictures to be posted.

If you still want to bring a camera, make sure that it is waterproof. We also recommend that you use a leash to attach it to your life vest. A floating strap will not be enough to protect your camera, because although it will keep it afloat, you will not be able to find it in the darkness of the lagoon.

Optional round trip transportation is available for a flat rate of $20.00 per person (pp).

Pickup points include all hotels in San Juan, Carolina, Humacao, and the east coast area.

Pickups from the San Juan- Isla Verde area are scheduled one hour and a half (1.5 hrs) before the trip’s check-in time. For example, for a tour with a 6:00 PM check-in, the guest will expect to be picked up by 4:30 PM.

For pickups in the Rio Grande area, the guest must expect to be picked up 45 minutes before trip’s check-in time.
The private transportation rate is $140. If your party doesn’t reach the minimum requirement (read below), this option may work for you.

The transportation service is scheduled directly with Kayaking Puerto Rico and provided by Fine Line Excursions.


Transportation service is subject to a minimum of 7 guests requesting transportation for the same trip. This doesn’t mean that you need to have all seven guests in your party; you can simply join other guests from other groups that also requested transportation.

However, in the event that the minimum is not met, we will call you one or two days prior to the excursion to go over alternative options (i.e. payment options for private transportation, car rentals, rescheduling for a different date or time that already has the minimum requirement for transportation, or cancellation without penalty).

We have a 48-hour cancellation policy for all of our excursions. Up until 48 hours before check-in time, you may change your reservation or cancel it for a full refund. Cancellations made in less than 48 hours before departure time, late arrivals, and “no-shows” will maintain a full charge. All cancellations must be made directly with Kayaking Puerto Rico, by telephone or email.


Groups of 10 or more guests must cancel at least 2 weeks prior to the date of the excursion in order to receive a full refund. Cancellations of groups made in less than 2 weeks prior to the excursion date will maintain a full charge on any spaces we are unable to resell. Guests that are no-shows or late arrivals will receive full charge.


If we cancel a tour due to weather conditions, you will be provided a full refund. However, be aware that we are the ones that determine the cancellations due to weather conditions. Please, do not make the mistake of deciding not to attend because you think the weather might not be acceptable, as you will still be charged if the trip goes out. If you ever have a question about the weather conditions, please call us to confirm.


Due to the unique nature and small size of our groups, we are forced to remain firm about our cancellation policy. Consider that on the day of your excursion we will be there, onsite, waiting, and ready to serve you. Regardless of the cancellation reason, our time and fixed costs are already invested; we may even have turned down other customers by holding your space. Thank you for understanding!


Claribel 19
Fort Lauderdale, Florida

There is always a reason to go back to Kayaking Puerto Rico!!! As I have done it for the pass years… Its an adventure whether you know how to kayak or not!! Knowledgeable staff from reservations to kayaking guides!!!! Recommended highly. Five stars!!!!!

Dana R

This company is awesome. They are friendly, fun, knowledgeable and have a few goofballs. They provide snacks after the trip and a picture.


 Memories we will never forget, snorkeling with sea turtles, a great reef full of sea life, and the beautiful Flamenco Beach. Our whole family with kids 9-15 had an incredible time.