Bioluminescent Bay Swim & Sunset Cruise in Puerto Rico
Difficulty
moderate
Duration
3–4 hours
Fitness Level
Suitable for moderate fitness; comfortable swimming skills needed for in-water portions
Overview
Experience La Parguera’s glowing bioluminescent bay by night with a sunset cruise and swim that reveals nature’s living light show. Discover a rare aquatic wonder just off Puerto Rico’s coast.
Biobay Experience
All ages • 8 - 9 Hours
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About This Adventure
Embark on a captivating full-day adventure in Puerto Rico, featuring a stunning sunset cruise and an unforgettable swim in La Parguera's bioluminescent bay. Experience the enchanting glow of microscopic organisms as you glide through warm waters, making this unique excursion a magical encounter with nature's wonders. Enjoy local cuisine and intimate group settings.
Duration
8 - 9 hours
About
Enjoy a sunset cruise followed by an exploration of one of Puerto Rico’s bioluminescent bays during this full-day excursion from San Juan. Relax in our natural hot springs on our way to the south area of Puerto Rico. Followed by a local lunch at a small fishing town were will be sailing out to the nearby famous Cays of the South. Experience the glowing rays of the sun as they fade into the ocean while enjoying our Caribbean turquoise waters. Then see a different type of glowing as you explore and swim in the bioluminescent waters near the town La Parguera.
Adventure Tips
Book Evening Tours
To see the bioluminescence at its peak, schedule your trip at least an hour after sunset when the bay is fully dark.
Avoid White Light
Use red or no flashlights to preserve night vision and avoid disrupting bioluminescent visibility.
Wear a Life Jacket
Safety first—the tours provide life jackets to ensure a secure swim in the bay’s waters.
Check Weather Conditions
Tours run only on calm, moonless nights for optimal viewing; confirm before booking to avoid cancellations.
Local Insights
Wildlife
- Manatees
- Tropical fish like parrotfish
History
La Parguera's bioluminescent bay has been a natural marvel for centuries, known to indigenous Taíno people for its glowing waters.
Conservation
The tour operators emphasize eco-friendly practices, minimizing artificial light and restricting group sizes to protect the bay’s delicate ecosystem.
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Adventure Hotspots in San Juan
Frequently Asked Questions
Recommended Gear
Swimsuit
Essential for swimming comfortably in the bay's glowing waters.
Waterproof Phone/Camera Case
Protects electronics while capturing memories in wet conditions.
Change of Clothes
Dry clothes ensure comfort after the swim and cruise.
Light Jacket or Cover-up
Useful for cooler evenings out on the water after sunset.
evening specific