Check out these amazing photos of polychaetes! Polychaetes are mostly marine and are covered with hard, chitin spines, giving them the nickname “bristle worms.”
They are pretty much ubiquitous in the ocean, found on the cold, dark deep-sea floor, swimming in the water column, near boiling-hot hydrothermal vents—there’s even a species that exclusively feeds on whale bones that have fallen to the deep sea.
See more photos at the Echinoblog.
Photo Credit: Arthur Anker, National University of Singapore.