Puerto Rico is home to 3 of the 5 bioluminescent bays in the world! Making it a rare opportunity to see the glow with your own eyes. That is why we have put together this list things to do featuring the best bioluminescent tours in Puerto Rico. Join one of the unique tours below to kayak or swim amongst the natural phenomenon of glowing neon lights up close and personal. These tours are a must when visiting Puerto Rico.