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Bioluminescent Bay (Mosquito Bay)
Bioluminescent Bay (Mosquito Bay)

Bioluminescent Bay (Mosquito Bay)

Puerto Mosquito, Vieques, Puerto Rico

The Basics

Any contact with the water—by the boat, a paddle, or a part of the body—makes the water glow bright neon blue and green. Jump in for a neon-lit swim, cruise over the water in a pontoon boat, or board a kayak to paddle through the bay. Nighttime kayak tours typically allow you to learn about the biology of dinoflagellates and their interaction with the Vieques ecosystem.

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Overnight Bio Bay Kayak Tour in Vieques Island
Overnight Bio Bay Kayak Tour in Vieques Island
$55.99 per adult
Traveler Favorite
Best night ever
We got lots of great scientific info about the bioluminescent Plankton that glow in the bay and a very attentive and concerned tour guide.
Benjamin_F, Jun 2022

Recent reviews from experiences in Vieques

star-4
A magical night
Ruth_H, May 2022
Overnight Bio Bay Kayak Tour in Vieques Island
The tour guides were very service and safety oriented. The view at night was stunning with the starry backdrop. The bay was magical.
star-5
Best tour around
Sarah_J, Jun 2022
Bioluminescent Bay Kayak Trip from Vieques
Fantastic experience. The tour guides were very knowledgeable about the science behind everything. They were also fun and exciting to experience everything with. Couldn't have asked for a better experience!
star-5
Great experience!!! We loved it!!
Cynthia_A, Jun 2022
Bioluminescent Bay Kayak Trip from Vieques
Our tour guides John and LuLu were amazing!! They are very knowledgeable and explained everything very good. Thank you so much John and Lulu!!!
star-5
A MUST Experience!
Jorge_V, Jun 2022
Overnight Bio Bay Kayak Tour in Vieques Island
Amazing experience! It was the highlight of our trip to Vieques. Beginner Friendly Experience. The staff was friendly and helpful.
star-5
Awesome
Zachary_H, Jun 2022
Bioluminescent Bay Kayak Trip from Vieques
Such an amazing experience! Very friendly and knowledgeable guides. We would definitely do this one again. Highly recommended.
star-5
Amazing Guides and Experience
Rachel_L, Jun 2022
Bioluminescent Bay Kayak Trip from Vieques
Our tour guides were amazing and very informative. It was so nice and laid back with great stories to boot. Highly recommend this tour group and this adventure!
star-4
Worth the trip!
Seth_S, Jun 2022
Bioluminescent Bay Kayak Trip from Vieques
Great and informative tour. Helpful guides and the bay was beautiful! They take care of everything and answer any questions you have.
star-5
A must-do during your trip to PR
Alyson_G, Jun 2022
Bioluminescent Bay Kayak Trip from Vieques
This is a must-do in Vieques! We went on a new moon night and it was so worth it. Lulu was our guide and she was fantastic! Very knowledgeable and friendly, she made the trip fun. The whole team were super nice and accommodating - even turning around for a couple that was running a little late. I definitely recommend this outing during your PR trip!
star-5
It is easy to be put off,...
Liliana_M, Jun 2022
Bioluminescent Bay Kayak Trip from Vieques
It is easy to be put off, due to the sulfur smell but only at the beginning to get to the Kayaks, once you are in the Kayak all is fine with very experienced guides. It is worth it
star-5
Awesome experience
bindu_k, May 2022
Bioluminescent Bay Kayak Trip from Vieques
I reserved 9 PM tour, it was wonderful. The tour guides were really friendly and accommodating. Explained all the questions we have about bioluminescence.
star-4
Amazing Bio-Bay!!!
David_K, Apr 2022
Overnight Bio Bay Kayak Tour in Vieques Island
Amazing Bio-Bay!!! This was an incredible experience. Guide Adel did a great job. Would recommend this tour to anyone.
star-5
It was amazing! It was so...
Anna_C, May 2022
Bioluminescent Bay Kayak Trip from Vieques
It was amazing! It was so mesmerizing and informative. Our guide Rocket and Louis were fantastic. Would highly recommend it!!!
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Things to Know Before You Go

  • Nighttime tours require a stay overnight on Vieques Island; the tour company can typically provide recommendations for hotels or guest houses.

  • Be sure to apply bug repellent, as Mosquito Bay lives up to its name.

  • Mosquito Bay is the only bioluminescent bay in Puerto Rico where swimming is permitted.

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How to Get There

Mosquito Bay is located on the southern shore of Vieques, which can be reached by ferry from Fajardo on the main island of Puerto Rico. Reaching the bay is an adventure in itself that requires a 10-minute drive down a very bumpy and rutted 4WD track. Tours typically provide transportation to the bay from the town of Esperanza on Vieques Island.

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When to Get There

The dinoflagellates in Bioluminescent Bay are active year-round but are best seen during the new moon, when the sky is darkest and the water glows brighter by comparison. Tours typically do not operate the day before, during, and after the full moon, when the organisms are difficult to see.

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Must-See Vieques Attractions

Isla Vieques was under the control of the US Navy for 60 years and thus remains largely undeveloped. The small island is home to unspoiled rain forest dotted with pristine beaches and archaeological sites including the Hombre de Puerto Ferro, where skeletal remains up to 4,000 years old were discovered. Along with the famous bio bay, Vieques is host to some excellent snorkeling, especially at Blue Beach (Bahía de la Chiva).

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