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Bio Bay Night Kayak Adventure

Night Kayaking Eco Adventure

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Checkmark  We Offer 2 Night Kayak Tours:

  • Bioluminescent Bay Kayak Adventure during the waxing/waning moon phase
  • Full Moon Kayak Adventure during the full moon phase

Fajardo Bio Bay Kayaking

We off two kayaking tours that correspond with the Lunar Cycle. During the waxing/waning moon phases, the conditions are best for viewing Pyrodinium Bahamense, a species of Dinoflagellate or the bioluminescent organism. During the full moon phase, these conditions are best for viewing the moon’s reflection on the lagoon.

Bioluminescent Bay Kayak Adventure

Don’t let your day end when the sun goes down! We offer relaxing Fajardo kayak tours at sunset that lead to the fascinating Laguna Grande in the town of Fajardo located on the Northeast corner of the island! Under a blanket of the night sky and the historical lighthouse of Fajardo, you can touch the waters that glow with bioluminescent organisms!

The activity starts at sunset in the small fishing village of Las Croabas where you meet the friendly guides of Puerto Rico Bio Bay Tours’ kayak adventure team. They are set up with all the needed gear. The activity starts with botanical insect repellent, waiver orientation, and signing. Then the lead guide gives each group a complete Kayak 101 Safety Training, which covers all aspects of the Bio Bay tour and the operation of their kayaks, then the guides start lifejacket and light disbursement!

Now our tour starts, our guides lead your group across a small fisherman’s harbor to the entrance of Las Cabezas de San Juan Reserve. Here, you enter a mystical channel that leads to a peaceful place where the mangroves create natural tunnels and the sights and sounds of wildlife surround you! After a 25- to 30-minute paddle through the channel, based on traffic and tidal currents, your guide stops once in the lagoon to give commentary on the following points of interest:

• Mangrove forest and the different species.
• Birdlife that inhabits the area.
• Aquatic marine life that uses the lagoon as an estuary.
• Information on the bioluminescence organism.
• History on the lighthouse.
• Insight on seven of eight ecosystems found in the area.

Then we enter the lagoon called Laguna Grande (large Lagoon), here we paddle along the edge of the mangrove forest as we watch the stroke of each paddle light up a bioluminescent blue-green/white-green and encounter fish that look like shooting stars as they swim through the thick concentration of Pyrodinium Bahamense a species of Dinoflagellate!

This leads the group to our breakpoint where beautiful views of the rainforest and the lighthouse of Fajardo accompany interpretation of the natural area and good conversations. Now we are about one hour into our Bio Bay kayak tour, interpretation of the natural area has ended and our group is now en-route to Bird Island to view many birds that roust here at night! Once quietly rounding the small island, we start our return to the departure site, this takes about 30 to 45 minutes.

This tour is offered as the Full Moon Kayak Eco Adventure during the full moon cycle. Please be sure to check what the moon phases are during your visit!

Full Moon Kayak Adventure

Our Full Moon Fajardo Bio Bay Kayak Adventure is the perfect nature adventure under a full moon, and if your stay in Puerto Rico happens to fall during the full moon stage you don’t have to miss out on our Night Kayaking Tours! This tour was developed as an alternative to the Bioluminescent Bio Kayak Adventure during the full moon cycle as the reflection of the moonlight on the surface of the lagoon makes it difficult to see the bioluminescent organism. But that same moonlight exposes mangrove forests, eight ecosystems, bird life, the second oldest lighthouse in Puerto Rico, iguanas, and much more of nature’s secrets that are normally overlooked on the darkest nights!

We provide:

  • Double kayaks
  • Backrests, paddles, and leashes.
  • Lifejackets (PFDs) & all needed safety equipment
  • Two to three CPR, First Aid & Navigation Certified Guides per-twenty four
  • All required navigation lights as required by the U.S. Coast Guard & lifejacket marker lights.
  • Snacks – Assorted cereal bars, nuts & banana chips, and cold bottled water.

Our equipment is inspected by the U.S. Coast Guards annually.


  • Chevron down No Swimming
  • No swimming is permitted in Laguna Grande under Regulation 8013 of the Department of Natural Resources. Also, note that since 2007 the Department of Natural Resources has appointed nine licensed outfitters for kayak tours within Laguna Grande. All hold different nightly total for guest capacity, with this said the area is saturated, it would be advised that if your vacation plans allow it, it is best to book Monday through Thursday as traffic in the area is less.

  • Chevron down Requirements
  • • No children under six, six through 17 with adult supervision.
    • No alcohol or consumption of alcohol during said tour, anyone under the influence may be removed from the tour.
    • Combined weight not to exceed 450 pounds.

    This tour is not suggested for women six months and further along in their pregnancy term, people with any heart conditions, open heart surgeries, heart murmurs, taking high blood pressure medication, asthmatic, diabetic or has had any recent surgeries that may make it difficult to be seated in a tight position for up to two hours. This tour is not suggested for those who have fear of the water and the dark.

  • Chevron down Please Note
  • Friday & Saturday are packed, although the adventure is still wonderful to be prepared to deal with large groups of people as well as local traffic in the area.

  • Chevron down Itinerary
  • Tour duration is about an hour and 45 minutes to two hours in water with 45 minutes of pre-bus and waiver orientation – pre-ride (kayak – 101) safety training and fifteen minutes once back on shore for snacks, cold water and closing comments for a total of three hours.

    Approximate Time Frame from April to September:
    5:45 p.m.: Arrival at Las Croabas
    6 to 7 p.m.: Check-in & insect repellent, waivers as a group, kayak 101 safety training, lifejacket & safety lights.
    7 to 9 p.m.: Tour duration in water shore to shore.
    9 p.m.: Snacks & water, optional comment sheets.
    9:15 to 10:30 p.m.: Estimated return time to hotel based on traffic.

    Approximated Time Frame from October to March:

    5:15 p.m.: Arrival at Las Croabas
    5:30 to 6:30 p.m.: Check-in & insect repellent, waivers as a group, kayak 101 safety training, lifejacket & safety lights.
    6:30 to 8:30 p.m.: Tour duration in water shore to shore.
    8:30 p.m.: snacks & water, optional comment sheets.
    8:45 to 10 p.m.: Estimated return time to hotel based on traffic.