Bio Bay Tour: Vieques Bioluminescent Waters

Discover Mosquito Bay’s glowing waters on a bioluminescent kayak tour. Experience nature’s magic as each paddle stroke lights up the night.

Duration: 1 hour, 30 minutes
Cancellation: 24 hours
Highlights
  • Bahía Bioluminiscente - Join an enchanting journey with the Vieques Bio Bay tours, where participants can glide through the bioluminescent waters of Mosquito Bay and experience the stunning glow produced by tiny organisms known as dinoflagellates. These microorganisms light up when agitated, creating a magical spectacle as each paddle stroke leaves trails of shimmering blue.
What's Included
  • Glass Bottom Kayak
  • Round trip transportation from the meeting point to the Biobay and back
  • Tour Guide
  • Life Jacket
Additional Information

Join an enchanting journey with our Bio Bay tours, where you’ll glide through the bioluminescent waters of Mosquito Bay and experience the stunning glow produced by tiny organisms known as dinoflagellates. These microorganisms emit light when disturbed, creating a magical display as each paddle stroke leaves trails of sparkling blue.
Travel Notice: If…

Location
Abandoned building
Seasonal Notice: Starting in March, all tour times move 30 minutes later due to daylight changes. A 6:30 PM booking will operate at 7:00 PM. Weekend guests must stay overnight in Vieques due to ferry schedules.
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Customer Ratings
4.3
(96 Ratings)
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Michele
Apr 19, 2026
Unexpectedly amazed - The bay was amazing and the team made me feel safe as kayaking at night with complete darkness was a new experience for me!
Review provided by Tripadvisor
Brittany_t
Mar 27, 2026
Bucket List Experience - We had a great experience! We took our 4 kid, ages 9-15. The trip was smooth and well organized. Our guide took time to explain the science behind the microorganisms and even brought a light blocking cover for our kayaks to really experience the full effect! If possible, try and go on a night with lots of cloud coverage/minimal moonlight. When the clouds covered the moon, the glow was much brighter. Great bucket list item checked off!
Review provided by Viator
Clinton_j
Mar 22, 2026
Biobay amazingness - Amazing experience, be sure when you book, that you’ve paid attention to the lunar cycles and the weather as much as as possible. Go whenever there is no moon or a new moon.
Review provided by Viator
Ilediaz17
Feb 18, 2026
Highly recommended! Unforgettable experience! - An unforgettable experience! They left us longer than we expected in the water and our guide's explanations were excellent! The only bad thing was that in our group there was a drunk couple who were very reckless with kayaking, I think they should not have allowed them to take the excursion, because they endangered the rest of the group. Except for that, the experience was very good. Ideally, do it on a cloudy or new moon day so that the sky is very dark. We loved it!
Review provided by Tripadvisor
Monil_p
Feb 17, 2026
Bioluminescence trip - Bioluminescence tour excellent trip to see. Place to visit during moonless night is the best time to plan. Clear sky and star viewing is fun too
Review provided by Viator
Davej849
Jan 20, 2026
Great Tour - It was a nice trip, we enjoyed ourselves
Review provided by Tripadvisor
Melissa_o
Mar 17, 2026
Lovely experience seeing the Bay - Very well organized.. wish we had more time to just paddle vs being all connected most of the time but also get that the winds were high and not everyone is an experienced kayaker. Bay was very neat! Stars spectacular! Timon (I think that was his name?) was an amazing guide! Great conversation and wonderful sense of humor.
Review provided by Viator
Brett_j
Mar 17, 2026
Well organized, but didn’t learn much - Tour was well organized but guides were difficult to understand. Would have liked to learn more about the bioluminescence bay and its history. Overpriced for the quality of the tour
Review provided by Viator
Nancyaj9939qq
Apr 9, 2026
Don’t BOOK! - Do not book this tour! Horrible customer service. Very inconvenient. 1.5 hr ferry ride to get to the island. They don’t tell you this when booking that the last ferry back is at 9:30pm and they have an 8:00 time slot. Which means if you book it you’re stuck on the island all night! Their customer service is horrible and very unfriendly.
Review provided by Tripadvisor
Brad_k
Mar 16, 2026
Attempted to get a refund... - Attempted to get a refund and couldn’t get in contact with anyone until the day of scheduled activity. Viator claimed that the tour refused to refund, the tour said Viator was lying and never spoke to them and Viator could issue a refund. Both parties blamed other party. Tour offered me a free excursion for the family if we ever returned to PR due to Viators actions however we live about 7-8 flight hours away so no chance that’ll get occur. Viator said they called the tour to get refund and your owner said they never did, Viator and the tour also didn’t disclose an important detail that a person would be stuck on an island an hour away with later tour. It was all a mess start to finish. We won’t use Viator ever again.
Review provided by Viator
From $65
up to 15 guests
1 - Adult
Cancellation: Free cancellation up to 24 hours before the start of your experience (local time).