7d340a66a5bc857f488dd8af7441f994 ← Previous Next → Laguna Grande, Fajardo, Puerto Rico Laguna Grande is a tourist hotspot. The plankton in this region put on quite the show and when first spotted by Spanish sailors in the 17th century, they believed it was the devil causing the glow. Share this using:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Tumblr (Opens in new window)Like this:Like Loading...