What Makes The "Northern Lights of the Sea" So Magical?

From Aristotle to Darwin, Humankind's effort to understand bioluminescence spans thousands of years. Even though it's one of the oldest fields of scientific study, answers remain elusive. In this episode of Untold Earth we get in the water with the bioluminescent algae of the Salish Sea, experiencing and asking: what is it about this inscrutable mystery that inspires such obsession?