HomeToursVieques: Bioluminescent Bay Kayak Night Tour with Guide

Vieques: Bioluminescent Bay Kayak Night Tour with Guide

4.4 (47 verified reviews)

About This Experience

Mosquito Bay in Vieques holds the Guinness World Record as the brightest bioluminescent bay on earth, and at $55 this is the cheapest way onto it that we could find. You paddle a fully transparent kayak, so the glow appears underneath you as well as around the blade — every stroke lights up the hull and the water below it at the same time.

It is a one-hour tour, which is the standard shape on Vieques: the bay is small and enclosed, so there is no long mangrove channel to work through as there is at Fajardo. You are on the glow almost immediately. The guide covers the biology of the dinoflagellates that cause it and the reasons this particular bay is so much brighter than the other two.

The catch is not the tour, it is the island. Vieques is reached only by ferry or a short flight, and getting there is your responsibility — the operator states clearly that transport to and from Vieques is not included. One genuinely useful detail: guests on the 7:00pm departure are driven back to the ferry port afterwards and the operator guarantees the return. That only applies to the first tour of the night.

Highlights

  • Paddle Mosquito Bay, the Guinness World Record holder for the brightest bio bay
  • Fully transparent kayaks, so the glow shows beneath you and not just beside you
  • The lowest price of any tour in this catalogue at $55
  • A guided explanation of why this bay outshines Fajardo and La Parguera
  • Guests on the 7:00pm departure get a guaranteed lift back to the ferry port
  • One hour on a small enclosed bay — no long channel paddle to reach the glow

What's Included

  • ✓ Fully transparent two-person kayak and paddle
  • ✓ Certified life jacket and safety gear
  • ✓ Expert local guide for the duration
  • ✓ Guided tour of Mosquito Bay
  • ✓ Briefing on the bay's ecology before launching
  • ✓ Return transfer to the ferry port for the 7:00pm departure only

Not Included

  • Ferry or flight to Vieques — not included and not arranged by the operator
  • Transportation to the meeting point
  • Food and drinks
  • Accommodation on the island

What to Bring

  • Swimwear under comfortable clothes
  • Insect repellent and biodegradable sunscreen
  • A waterproof camera if you have one
  • Drinking water

Good to Know & Caveats

  • Vieques is reached by ferry or plane only, and transport to the island is not included in this booking.
  • The return transfer to the ferry port applies to the 7:00pm tour only, not the later departures.
  • Mosquito Bay is the brightest of the three bays, but brightness still drops sharply around a full moon.
  • Swimming is prohibited in Mosquito Bay to protect the organisms — this is a paddle-only bay.
  • Minimum age 6.
  • Free cancellation up to 24 hours in advance.

Not Suitable For

  • Children under 6 years
  • People with mobility impairments
  • People with heart problems
  • People with epilepsy

Meeting Point

Esperanza on the south coast of Vieques. The operator returns 7:00pm guests to the ferry port at the end of the tour.

What Travelers Say

Rated 4.4/5 by 47 verified GetYourGuide travelers.

This tour was amazing. I forget my guides name but he was very knowledgeable and answered all my mom and I's questions. We wrapped up a little late and were afraid of missing the ferry back but they got us to drop our rental off and to the ferry just in time. they operated smoothly, and the natural phenomenom was definitely a highlight of our trip. We almost didnt do it but are so happy that we did.

— Alyssa, September 8, 2026

It was really cool! Our guide was exceptionally good and informative. Highly recommended!

— Kamie, June 29, 2026

The bio bay tour itself was wonderful. The guide was very knowledgeable and the team made sure everyone stuck together. The meeting point was easy to find and the transportation to the bay was good. The ride back to the ferry after the tour was pretty bad. The driver was speeding and went through at least one stop sign. We were in a rush to get people to the last ferry of the night, but the ride felt unsafe. We would have given the tour 5 stars if we had opted for our our ride back after the tour because the actual tour is wonderful.

— Amy, July 4, 2026

Frequently Asked Questions

How do I get to Vieques for this tour?

By ferry from Ceiba or by a short flight from San Juan or Ceiba. Neither is included in this booking and the operator explicitly takes no responsibility for ferry delays or cancellations. Ferries fill up, especially at weekends, so book ahead and build in slack — arriving the day before is the safest plan.

Is Mosquito Bay really the brightest bio bay in the world?

It holds the Guinness World Record for it, and the difference against the other two Puerto Rican bays is visible rather than marginal. That is the reason to make the ferry trip. It does not make the bay immune to moonlight though — a bright moon washes out Mosquito Bay just as it does Fajardo and La Parguera.

Can I swim in Mosquito Bay?

No. Swimming is prohibited in Mosquito Bay to protect the dinoflagellates, and the same applies at Laguna Grande in Fajardo. La Parguera is the only one of the three Puerto Rican bio bays where you can get in the water.

What does the transparent kayak actually add?

You see the glow through the hull as well as around the paddle. In an opaque kayak the light is something happening beside you; in a clear one it is happening underneath you too, which is a noticeably different impression on a bay this bright. It is the reason most Vieques operators have switched to clear boats.

Can I do this as a day trip and take the last ferry back?

Not reliably. Guests on the 7:00pm departure get a guaranteed lift back to the ferry port, but the last ferry off Vieques leaves early enough that other bio bay operators on the island require you to have a night's accommodation booked. Plan to stay over unless you are on that first tour and have checked the current ferry timetable yourself.