It seems so effortless for some deep-sea creatures to follow Mark Twain’s counsel to dance like nobody’s watching. This segmented gossamer worm is a Tomopteris that lives its entire life in the Ocean’s Twilight Zone — experiencing neither sun nor seafloor. According to @mbari_news, they range in size from a few centimeters to over a foot in length, and these pelagic polychaetes possess the ability to spew yellow bioluminescent mucus, they suspect, to deter predators. This hypnotic dancer was spo