Bio Bay Kayak Adventure, Fajardo
Fajardo · 2 Hours · 4.6(1,795)
Free cancel 24h
from $67
Bio Bay · Fajardo
Bio Bay Kayak Tour in Fajardo
2 Hours4.7(2,089 Viator reviews)Details checked July 2026
Free cancellation · 24h
Laguna Grande, reached by kayak through a mangrove channel from near Las Croabas, is one of Puerto Rico's bioluminescent bays, where microorganisms in the water light up when disturbed, turning every paddle stroke into a streak of blue-green glow. Guides lead the two-hour paddle out through the mangroves and into the open lagoon after dark, when the bioluminescence is visible. How bright the glow appears depends heavily on the moon phase, since a full moon washes out the effect, so tours are scheduled around the lunar calendar.
Pro tip
Book around a new moon if the glow itself is the priority; near a full moon the ambient moonlight washes out much of the bioluminescent effect.
Highlights
Guided night kayak through a mangrove channel
Bioluminescent water that glows with each paddle stroke
Departs near Las Croabas in Fajardo
Scheduled around the moon phase for the best glow
Intensity
Active
Similar experiences
See dates & prices
Bioluminescent Bay Kayak Trip from Vieques
Vieques · 2 Hours · 4.5(1,231)
Free cancel 24h
from $65
La Parguera Bio Bay Boat Ride and Swimming
La Parguera, Lajas · 9 Hours · 3.9(700)
Free cancel 24hPickup
from $54.99
Before you go
Complete your trip
The small things our team quietly lines up before every Puerto Rico trip.
from $89
Free cancel · 24h