Dr. Latz was invited to a symposium on light contamination in Puerto Rico, the 3rd Light Pollution Form, held in August 2016. In his presentation he discussed the importance of dark nighttime conditions for optimum viewing of bioluminescence. Joined by Puerto Rico scientists Prof. Juan Gonalez and Dr. Brenda Soler-Figueroa, he answered questions from an audience representing a broad segment of stakeholders. Puerto Rico is proactive in its efforts to support the Dark Sky Initiative in reducing light ‘pollution’; legislation limits nighttime lighting in the vicinity of bioluminescent bays.