Our last day we had to check out and stay at another hotel for our last night since we changed the days of our trip a couple weeks before we left. So we checked out and then drove to the jungles to see the waterfalls and then go to Fijardo to kayak in a bay that is a biodome. It was so cool. We kayaked around this bay and when you would move or splash the water this substance would be triggered and look like glow sticks had been opened in the water. It would only last a few seconds, but it was super cool. Great way to spend our last night in Puerto Rico.