Bioluminescent Bay Kayaking Tours
Discover the glowing waters of Fajardo, Puerto Rico today. Book your tour today!
Fajardo Bio Bay Kayak Tour
"An amazing experience!" - Jess W.
Experience one of Puerto Rico’s most unforgettable natural wonders with a nighttime kayak tour of Laguna Grande.
Overview
Rate: $58pp + taxes & fees
Location: Fajardo, Puerto Rico
Duration: 2 Hours
Ages: 6+
Cancellation: 48 hours notice required for full refund; no-shows incur full charge.
Tour Info
Come along for an unforgettable blend of nature and! You’ll paddle through the mangroves, under a beautiful night sky, as you learn about this magical natural phenomena.
The water will glow a shimmering blue-green as you glide across Laguna Grande. This incredibly popular tour tends to sell out so we recommend booking in advance!
What's included
All required safety equipment
Experienced local guides
Water & snacks
Bug repellent
Kayaking basic training and safety instructions.
What's not included
Transportation to the meeting site
Highlights
Witness the bioluminescent glow of Laguna Grande
Guided by a certified Marine Biologist
Kayak through the mangrove canals under the stars
Ideal for all skill levels
Such an amazing experience in the bioluminescent bay. The guides were helpful, knowledgeable and funny. The bay was so beautiful! And the kayaking was fun. Will definitely go back when we are in PR again!
• Jessica W.Bioluminescent Bay with Transportation from San Juan
Transportation from San Juan provided
Overview
Rate: $100 per person + taxes & fees
Location: Fajardo (includes hotel pickup in San Juan)
Duration: 2 Hours + 2 Hours Transportation
Ages: 7+
Cancellation: Full refund if canceled 24 hours in advance; $10 fee applies.
Book this version of the tour and you’ll get round-trip transportation to Laguna Grande, so you can skip the taxi hunt and still catch the glow.
FAQs
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If you click “book now” on the tour of your choice, and start the booking process you will be able to see how many spots are available on each tour. If there is limited availability, the number of spots left will appear after you select your preferred date.
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Most bio bay tours last between 1.5 to 2 hours. That includes time paddling out, exploring the lagoon, and learning about the glow. You’ll usually be on the water for about an hour, depending on weather and group size.
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The only bio bay that permits swimming is La Parguera
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Yes, for the Fajardo Bio Bay Tour, the weight limit is 200 lbs. The Bioluminescent Bay with Transportation from San Juan tour has a weight limit of 290 lbs.
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Yes, click here to learn more and book a Vieques bio bay tour.
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Cancellation policies vary between tour providers. All tours offer cancellations and refunds. You can find more details in each tour’s description.
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Bio bays are visible year round in Puerto Rico, but the best time to see their glow is during the dry season (December - March) on a moonless or cloudy night.
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The Bioluminescent Bay Tour with Transportation From San Juan offers round-trip transportation for those staying in the San Juan area.
Experience Puerto Rico’s Bioluminescent Bays
Puerto Rico is home to three of the world’s five bioluminescent bays, each one a natural wonder you truly have to see to believe. Located in Fajardo, Vieques, and La Parguera, these rare ecosystems light up the water in shimmering shades of blue, green, and white every time you touch the surface. Photos don’t do it justice! The glow looks like starlight scattered beneath your kayak.
So, what creates this magical effect? Each bay is packed with millions of microscopic organisms called dinoflagellates. When the water is stirred—by a paddle, a wave, or even your fingertips—they release a soft, natural glow. The phenomenon is delicate, influenced by moonlight, weather, and water conditions, which is why locals recommend timing your visit for the darkest nights for the brightest show.
Laguna Grande – The Bio Bay Closest to San Juan
If you’re staying near San Juan, Laguna Grande in Fajardo is your most accessible bio bay experience, just a 45-minute drive from the city. Guided tours lead you through mangrove channels and out into the glowing lagoon on a peaceful two-hour kayak trip. Local operators keep groups small and share stories about the bay’s ecosystem, history, and the science behind its light.
For a full-day adventure, you can pair your bio bay tour with a trip through El Yunque Rainforest, turning a simple night paddle into an unforgettable day exploring Puerto Rico’s wild side.
Tours book up fast, especially around new moon phases, so it’s worth reserving early to secure your spot. Whichever bio bay you choose, this is one of those rare, must-do experiences you’ll carry with you long after your visit.