Things to Do in Fajardo

By day, Fajardo’s famous “Bio Bay” looks like a regular Puerto Rican coastline. By night, however, the bay becomes an eerie lagoon that literally shines a fluorescent hue with every movement or splash. Due to the presence of microscopic plankton that thrive in the shallow waters, every stroke of a kayak paddle creates a trailing ribbon of light. Officially known as “bioluminescence,” there are only a handful of places worldwide where the phenomenon is consistently found. One of those is here at Laguna Grande just off the shores of Fajardo, where kayak tours literally allow visitors the chance to set the water aglow. For as eerie and almost unnatural as that sounds, watching the water glow on your fingertips isn’t the spookiest part. Rather, that would be kayaking through dense mangroves under a total canopy of darkness, where every creak, groan, and jungle sound reminds you’re not indoors.