Fajardo Bio Bay Kayaking Tour with San Juan Transport

Guided

Duration: 6 hours

Fajardo• San Juan• Las Croabas

Features

Kid Friendly

Locally Owned

Wildlife

Shuttle Included

Small Group Sizes

Beginner Friendly

Free Cancellation

On the Water

Instant Book

$115 Person

(For Ages 7+)

Description

Paddle the Glowing Bay in Fajardo with Transport from San Juan!

Experience the magic of glowing waters on this Bio Bay night kayaking tour—with round-trip transportation from San Juan! How does paddling through liquid light sound? In Laguna Grande, Fajardo, millions of microscopic dinoflagellates light up the water each time it’s touched—creating a surreal glow beneath your kayak. It’s a natural phenomenon that has to be seen to be believed.

This guided tour takes you through calm mangrove-lined canals and into the bioluminescent bay, where every paddle stroke sparks a burst of blue-green light. With transportation included from San Juan, all you have to do is sit back, relax, and get ready for one of Puerto Rico’s most unforgettable adventures.

Duration of Adventure

6 Hours

Location / Where to Meet

Transportation is included in this tour from San Juan.
At checkout, please select your hotel or preferred pick up location and meet the driver there!

Ages & Requirements

Minimum age of 7 years old.
Children must be accompanied by an adult.
Weight limit per person is 195 lbs (88.5 kg).
Tours are subject to a minimum. If this minimum is not met, we will contact you about rescheduling or cancellation.
A minimum number of 5 participants is needed to provide a tour. Tours are subject to cancellation if minimum amounts are not met.
The tours are designed by the company to run in rain or shine.
Kayaks are double (2 people per kayak). Odd numbers groups will be paired with another person in the tour.
Guests must be able to paddle the kayak completely by themselves.

What’s Included

Experienced Tour Guides
Guided Tour of the Laguna Grande Bio Bay
Kayak Equipment & Life Vest
Transportation from the area of San Juan (Old San Juan, Condado, Santurce, Miramar, Isla Verde-Carolina).

Not Included

Gratuity - Never expected but if you have a great experience, please consider gifting 10-25% to your guides!

What to Bring / Wear

Swimsuit or Quick Drying Clothing
Water shoes or Sandals with Straps
Towel
Insect Repellent (DEET-Free)
Dry Bag
Water & Snacks
Extra Layers of Clothing - Sweatshirts and Warm Hats
Required Paperwork - Signed medical form if required, waivers, etc.
Waterproof Camera - The company is not responsible for any damaged or lost items.
Please remove any jewelry, watches, or anything that can get damaged by water or you don’t want to lose.

ADVENTURE PROVIDED BY Natural Wonders PR

FAQs

Why can’t I swim in the bio bay?

Swimming is prohibited in Laguna Grande to protect the delicate dinoflagellates—the microorganisms that create the glowing effect. People entering the water would disturb sediment and potentially ruin water clarity, which is vital to the organisms’ health. It’s also a regulatory requirement enforced by Puerto Rico’s Department of Natural and Environmental Resources.

Why can’t I use mosquito repellent that contains DEET during my bio bay tour?

Most DEET-based repellents and lotions are banned on bio bay tours because these chemicals can harm the dinoflagellates. Tour operators recommend using DEET-free balms or creams and applying them at least 30 minutes before your tour to reduce transfer to the water.

What is bioluminescence?

Bioluminescence in Laguna Grande is caused by microscopic plankton called dinoflagellates (Pyrodinium bahamense). When their water is disturbed—by paddles, hands, or waves—they emit a bright blue-green glow as a defense mechanism.

Can we take pictures during our bio bay tour?

Yes, but with caveats. It’s challenging to capture the glow with standard phone cameras or DSLRs without specialized settings. For the best results, a waterproof camera with long exposure is recommended. Phone cameras often fall short in capturing the full effect; your best bet is to enjoy the moment and cherish the live experience.

I’ve never kayaked before; can I still join?

This is a beginner friendly kayaking spot! The lagoon and mangrove tunnels are very calm and a great place to try kayaking for the first time.

If you are looking for more information on beginner kayaking, check out TripOutside’s blog post on Kayaking for Beginners!

When is the best time to see the bioluminescence?

The bioluminescent intensity depends on weather conditions such as rain, tide, moon phase, sunlight and many other natural factors out of our control. Ideally, the best time to visit is around the new moon and during the dry months, December to March with a midsummer dry season June to July.

Where can I learn more about bioluminescence?

Check out our blog describing bioluminescence more in depth at Bioluminescence Kayaking!

Cancellation Policy

If a participant wishes to cancel a tour, the company requires that the cancellation be done by calling us directly.
Refunds will only be given to those that cancel 48 hours before the commencement of an excursion. If a cancellation is done in less than 48 hours before the beginning of a tour, NO refunds will be issued, and a participant will be charged 100% of the cost of the tour.
The Company will not provide refunds to participants that miss the tour if they did not show up at a designated meeting location at a specified time by the Company.

Availability

January 2026

SuMoTuWeThFrSa

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Location

Address

200 Sol Street

Old San Juan, Puerto Rico, 00901

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