Scientists on a deep sea expedition spotted an iridescent species of polychaete on the ocean floor off the coast of Chile. It's one of the mission's many biodiverse sightings.

A polychaete deep-sea worm filmed by the Schmidt Ocean Institute. Photo: Schmidt Ocean Institute/Instagram Deep sea explorers want you to break out the "jazz hands" for this creature.

Others compared the polychaete to everything from “eyelashes” to “toilet scrubbers.” There are around 8,000 known species of these marine worms, which range in size from a few millimeters ...