Bio Bay Kayak Tour in Fajardo
Fajardo · 2 Hours · 4.7(2,089)
Free cancel 24h
from $89
Bio Bay · Vieques
Bioluminescent Bay Kayak Trip from Vieques
2 Hours4.5(1,231 Viator reviews)Details checked July 2026
Free cancellation · 24h
Mosquito Bay on Vieques holds the Guinness World Record for the brightest bioluminescent bay, and this guided kayak trip paddles out onto it after dark to see the water light up with every stroke and every fish that swims past. Departing from the Esperanza area, the two-hour tour keeps groups together with a guide the whole way, since the bay's channel entrance and the dark water require some local knowledge to navigate safely. Like any bio bay, the brightness varies with the moon phase, so the tour is scheduled around the lunar calendar for the darkest, most vivid nights.
Pro tip
Getting to Vieques itself takes a ferry or short flight, so pair this with an overnight on the island rather than trying to squeeze it into a mainland day trip.
Highlights
Kayak on Mosquito Bay, the brightest recorded bioluminescent bay
Guinness World Record holder for bioluminescence
Guided two-hour paddle after dark
Departs from the Esperanza area of Vieques
Intensity
Active
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