Bio Bay Tours Puerto Ricoby Paradise Seekers Puerto Rico (787) 209-2127
Two guests paddle a two-person kayak through glowing blue water at night in Laguna Grande, Fajardo, Puerto Rico

Fajardo Bio Bay Kayak Tour: Laguna Grande, every night.

Bioluminescent kayaking on Laguna Grande, about two hours after dark. Ride with us from your San Juan hotel, or meet us in Las Croabas.

Paradise Seekers Puerto Rico: 4.9 on TripAdvisor, 200+ reviews

Cancel free until 24 hours ahead.

Tonight's skySee the darkest nights on the moon calendar
  • Hotel pickupFrom San Juan to Fajardo
  • Every nightTwo departures, year-round
  • New to kayaks?Lesson on land first
  • Since 2005Owned locally in Fajardo

Essential Details

Early tour, our pick
Check-in 5:00 to 6:00 PM
Late tour
Check-in 7:00 to 8:00 PM
Length
Around 2 hours
Ages
6 and older
Price
$85, or $145 with pickup
See all trip details
The bay
Laguna Grande, in the Las Cabezas de San Juan reserve
Meeting point
Kayak Village in Las Croabas; address sent with your confirmation
When to arrive
At your booking time; kayaks go out about 30 minutes after
Your exact time
Moves with sunset; we text it on tour day
Pickup area
Hotels in Fajardo, Luquillo, Rio Grande and San Juan
Boats
Double kayaks, two paddlers each
Size limit
102 kg (225 lbs) per guest
What it covers
Kayak, paddle, life vest, lesson on land, guide, snacks after
Food
Snacks and cold drinks on shore; no meal included
Tour language
English
Changes
Cancel free until 24 hours ahead

Fajardo bio bay tour from San Juan

No car? Choose the $145 option and a driver collects you at your hotel in Fajardo, Luquillo, Rio Grande or San Juan, then brings you home after the paddle. Have wheels? Pay $85 and meet us at Kayak Village. By road it is about an hour, 50 to 90 minutes depending on traffic and where in San Juan you start.

Hotel pickup

$145 per person

We collect you, you paddle, we drive you back.

  • Air-conditioned ride both ways
  • Pickup time set after you book
  • Lesson, guide and snacks included
Contact Us to Book · $145

Meet us in Las Croabas

$85 per person

Drive to Kayak Village and check in with your guide.

  • Double kayak and life vest
  • Lesson on land plus your guide
  • Snacks once you are back
Contact Us to Book · $85

Room to change your plans

  • Cancel free until 24 hours ahead.
  • Money back in full if we call off a departure for unsafe weather.
  • Bright moon? Our guides carry a big tarp that shuts out the light.

Pick your night at Laguna Grande

Both departures run every evening of the year. A darker sky makes the glow pop, so tap a date to see its moon.

See all three bays on the bio bay moon calendar

How the Fajardo bio bay kayak tour works

Our Fajardo bio bay kayak tour is night kayaking with a coach, around two hours start to finish. You check in at Kayak Village in Las Croabas, practice strokes on land, then follow your guide through a narrow mangrove channel into Laguna Grande. Out on the dark lagoon, each pull of the paddle throws off blue-green light.

  1. Arrive in Las Croabas

    Be there at your booking time, which our tour-day text confirms. Kayaks hit the water about 30 minutes later.

  2. Learn the strokes on land

    Forward, back, steering and safety, covered before anyone climbs in.

  3. Into the mangroves

    Single file behind your guide. The early departure still has a bit of daylight here.

  4. Open lagoon, glowing water

    Every pull sparks blue-green, and your guide explains what is lighting up.

  5. Drift

    Stop paddling, float, and drag your fingers through the sparkles.

  6. Paddle home

    Retrace the channel to Kayak Village, where snacks and cold drinks wait.

What you will see in Laguna Grande, the bioluminescent bay

Laguna Grande is a mangrove-lined lagoon in Fajardo, protected inside the Las Cabezas de San Juan reserve, and one of three bays in Puerto Rico that glow all year. The light comes from Pyrodinium bahamense, a microscopic plankton that flashes when disturbed, so it trails your paddle, your fingertips and the nose of your kayak.

  • Movement makes the light: sweep a hand and watch it sparkle.
  • Dark skies are best, and the calendar above rates each night.
  • When the moon is bright, everyone gathers under the big tarp our guides carry.
  • Moon, weather and water set the brightness, and most guests see glow on every tour.

Curious how it really looks? See what to expect at the bio bay and why the water glows.

A hand moving through the water lights it up blue in Laguna Grande, Fajardo, Puerto Rico
A hand sweeping through Laguna Grande, Fajardo.

What guests say about the Fajardo bio bay tour

Paradise Seekers Puerto Rico: 4.9 on TripAdvisor, 200+ reviews

Great operation and experience! All 4 guides were fun, professional, and experienced. We went on a full moon night, so knew our chances of seeing the bioluminescence was unlikely, but the guides brought a large tarp that went over the entire group, blocking out all the light so we could see the bioluminescence perfectly! Kayaking through the mangroves at night would have been fun enough in its own right, but getting to see the bioluminescence when we weren't expecting to was even better.

Elizabeth S, Fajardo bio bay tour guest

What a great experience! We are vacationing in Puerto Rico with our two teenage kids (18 and 16) and they loved it as well. Our guide, Felix, was energetic, informative and entertaining. You get into your kayak and go through a channel - it is DARK! You arrive at a large lagoon after about 1.5 miles of kayaking. They brought a large tarp so that we could all put it over us, which made the viewing much better. You will get wet just from paddling and water getting into the kayak, so bring a dry change of clothes for the way home. A definite must do while in Puerto Rico!

Whitney H, Fajardo bio bay tour guest

Easy process, professional and fun tour guides.

Shawn S, Fajardo bio bay tour guest

Bio bay tour in Fajardo: who it suits and what is included

Couples, families whose kids are 6 or older, and people who have never sat in a kayak are a great fit for this bio bay tour in Fajardo. Your ticket covers a double kayak, paddle and life vest, the lesson on land, a guide beside you the whole time, and snacks with cold drinks afterward. Each guest can weigh up to 102 kg (225 lbs).

Who can join

See ages and limits
  • Age 6 or older, each child paired in the same kayak with a grown-up from their group.
  • 102 kg (225 lbs) per guest keeps the double kayaks steady.
  • First time paddling? The land lesson covers the basics, and your partner shares the work.
  • We do not recommend this paddle during pregnancy or with back or heart conditions.

Traveling with children? Read the bio bay with kids.

What to bring

See the packing list
  • Quick-dry clothes you can splash
  • Dry clothes for the trip back
  • Water shoes or sandals that strap on
  • Insect repellent for the mangroves
  • Drinking water
  • A dry pouch for your phone

More tips in what to wear to the bio bay.

Fajardo bio bay tour questions

Is the Fajardo bio bay tour OK for first-time kayakers?

Yes. Nobody needs paddling experience: before launch, your guide teaches forward strokes, steering and safety on land, then stays with the group the entire time on the water. Each kayak holds two, so partners split the effort. Children 6 and older are welcome on the Fajardo bio bay tour too.

How much is the Fajardo bio bay kayak tour?

It costs $85 per person when you drive to Las Croabas and $145 per person with the hotel pickup option, which serves Fajardo, Luquillo, Rio Grande and San Juan. Either price covers your double kayak, paddle, life vest, the lesson on land, a guide and snacks once you are back.

How do I get tickets for the Fajardo bio bay tour?

No ticket office exists at Laguna Grande: your reservation with us is the ticket. Send your date and group size by WhatsApp or call (787) 209-2127, and we confirm your spot and check-in time. Prices are $85 per person, or $145 with pickup. Our bio bay tour cost guide budgets the whole night.

Can I do the Fajardo bio bay tour from San Juan without a car?

Yes, choose the $145 pickup option. A driver collects you at your hotel in Fajardo, Luquillo, Rio Grande or San Juan, gets you to Kayak Village in time for check-in, and takes you home afterward. It runs with both departures. For drive times and rideshares, see our bio bay from San Juan guide.

What time does the Fajardo bio bay tour start?

It starts in the evening, with two departures that track sunset. Early tour check-in runs from 5:00 to 6:00 PM and late tour check-in from 7:00 to 8:00 PM, depending on the season. Treat your booking time as your check-in time: kayaks launch about 30 minutes after, and a text on tour day confirms the exact time.

Early or late Fajardo bio bay tour: which is better?

We suggest the early departure. You glide through the mangrove channel while a little daylight lingers, so the ride in becomes a highlight of its own, and the lagoon is dark by the time you reach it. The late departure is night from the first stroke. Both show you the glow.

How long is the Fajardo bio bay kayak tour?

Plan on roughly two hours from check-in to snacks. That time covers the lesson on land, the mangrove channel, drifting on the glowing lagoon and the paddle home. Departures run every evening of the year, two per night, and both are timed to sunset in Fajardo.

What is the youngest age for the Fajardo bio bay kayak tour?

Six is the minimum age. Each child rides in a double kayak with an adult from the same group, one grown-up per child, and kids should be able to sit steadily and paddle. Traveling with more kids than adults? Message us on WhatsApp first and we will work out the seating with you.

Are there size or health limits on the Fajardo bio bay tour?

Yes. Every guest must weigh 102 kg (225 lbs) or less, a limit that keeps double kayaks stable on every departure. We also do not recommend the paddle during pregnancy or with back or heart conditions. Questions about either one? Ask us on WhatsApp before booking and we will gladly talk it through.

Can you see the Fajardo bio bay during a full moon?

Yes, the lagoon glows through every moon phase. On bright nights the group gathers under a large tarp our guides carry, which shuts out the moonlight so the blue-green flashes stand out. If your dates have some give, use the moon calendar on this page to find the darkest evening of your stay.

What happens at the kayak lesson before launch?

On land at Kayak Village, your guide shows you how to hold the paddle, move forward, turn and stop, then talks through safety and the route. Everyone gets fitted with a life vest, the group launches together, and the guide stays alongside the kayaks from the mangrove channel to the lagoon and back.

Can you touch the glowing water in Laguna Grande?

Yes, from your seat. Guests stay in their kayaks for the whole tour, and dipping a hand over the side is one of the best moments: the water sparks around your fingers. Laguna Grande is a protected reserve, so the kayak is your viewing spot. Keep your phone in a dry pouch.

Will I get wet on the Fajardo bio bay kayak tour?

Expect some splashes. Paddle drips land in the kayak, so wear quick-dry clothes and water shoes or strap sandals, and pack dry clothes for the trip home. Add insect repellent, drinking water and a dry pouch for your phone. Leave jewelry at your hotel; we supply the kayak, paddle and life vest.

Is there a boat tour instead of kayaking in Fajardo?

Our Fajardo tour is a kayak paddle, made easy for beginners by the lesson on land. Prefer to watch from a boat? The La Parguera sunset boat and bio bay tour on the southwest coast suits you, with no minimum age. It runs on select nights each month, from $169 per person.

Fajardo or Vieques bio bay: which should I choose?

Pick by where you sleep. Laguna Grande in Fajardo works for San Juan and east coast stays, with nightly departures and hotel pickup. Mosquito Bay sits on the island of Vieques and suits guests spending the night there, since there is no same-day ferry back after the tour. Each starts at $85.

Can I cancel or change my Fajardo bio bay tour?

Yes. Cancel at no charge until 24 hours before your check-in. If unsafe weather makes us call off a departure, your money comes back in full. Want a different night instead? Send us a WhatsApp message or call (787) 209-2127 and we will move your booking to a date that works.

Your glowing paddle is one message away

Tell us your date on WhatsApp, with or without pickup, and we will hold your spots. Cancel free until 24 hours ahead.

(787) 209-2127 Contact Us from $85