You must reach Vieques yourself by ferry or plane, booked weeks ahead; tours leave on time and two person kayaks carry a shared weight limit. 4.76 from 490 reviews at €54 per person.
In our comparison: #51 of 70 in Day Trips, by rating weighted by review volume (see the comparison).
2 options from the operator, described in its own words. Prices are the operator's from-prices per adult for a party of two. Click an option to book it on Viator. Guide languages on every option: English, Spanish.
| Option | What the operator says | From, per adult |
|---|---|---|
| Clear kayak biobay tourThe page price | Clear kayak | €54 |
| Late tour | Late tour | €80 |
Children from €45 (ages 3 to 11). Option texts and prices come from the operator's listing; prices checked on Viator on 25 September 2026.
94% of ratings with a star breakdown are 4★ or 5★: 463 of 490
Star breakdown of all 490 ratings
Reviewers praise the clear kayaks and informative guides, but some report little or no glow on moonlit nights.
Written by Guidekin from the 100 most recent English reviews on Viator & Tripadvisor (12 April 2026 to 23 September 2026). Refreshed as new reviews arrive; last checked 4 October 2026.
Reviews are shown as the platforms publish them and removed when they disappear there.
Ratings collected from Guidekin, Viator & Tripadvisor.
Step into a glowing world beneath the stars with our clear kayak tours of Mosquito Bay, Vieques PR — officially recognized as the brightest bioluminescent bay on Earth! paddle through glowing waters in a transparent kayak, where every stroke lights up the water. Learn about dinoflagellates and how they thrive in Mosquito bay. See fish light up the water as they swim past you on our hour long guided kayaking tour, experience just how increible nature is!
1h 30mPlease read all info!
Join us for a once-in-a-lifetime adventure in fully clear kayaks in the world’s brightest bioluminescent bay! Watch fish light up as you paddle while learning the science behind this magical natural wonder
Meeting Location: Across from the Sun Bay Beach entrance/sign in Esperanza✨️ Meeting Time: 25 minutes before your scheduled tour time. We have a 10 min check-in window for all tours.
Departure Policy: Tours run on schedule and depart at the end of the check-in window, exactly 15 min before your tour time.
✨️Vieques is a separate island from mainland Puerto Rico. We recommend booking ferry tickets online 2–3 weeks in advance. Overnight stay recommended :) Guests on the earliest tour can catch the latest ferry on weekdays at 9:30 PM. On weekends the latest ferry is 9 PM, so we do not recommend trying to return on that ferry as it cuts time very close.
✨️Free cancellation BEFORE the 24-hour policy. Missed tours are non-refundable. $25 per person to reschedule
The operator's own notes, grouped by topic. Nothing here is added by Guidekin.
The booking form will also ask for: weights
For a full refund, cancel at least 24 hours before the scheduled departure time.
| Tour | Price | Duration | Rating | Group |
|---|---|---|---|---|
| This tour · #51 of 70 | €54 | 1h 30m | 4.76 (490) | shared |
| Arenales River Caving, Waterfall &Tropical Forest Secret Spring | €114 | 7h | 4.98 (1776) | shared |
| El Yunque Rainforest and Luquillo Kiosk Day Trip | €77 | 6h | 5.0 (608) | shared |
| Self-Drive Mini Boat Snorkeling Tour to Icacos Island | €227 per group | 3h 30m | 4.96 (1969) | shared |
Ranked #51 of 70 in Day Trips by Guidekin score (rating weighted by review volume). Prices here run from €23 to €818, median €90; typical length 5h. 2 of 70 are private. Figures are live from the tour cards; the rubric is our handpicked set, not the whole market. Compare all 70 Day Trips