A closer look

Imagine discovering a magical, bioluminescent body of water and immediately deciding it must be destroyed because Satan is clearly taking a bath. When the Spanish first encountered the glowing bays of Puerto Rico, they assumed the radiant blue dinoflagellates were the work of the devil. Their brilliant solution was to drop massive boulders into the channel to trap the evil magic, which inadvertently created the perfect ecosystem to make the water glow even brighter.