The competition in the deep zone was too great for filter-feeding to be a successful strategy, so glittering deepworms gradually became better adapted to being predators. Their bodies elongated for speed, and their tail fins extended. They developed a lens over their eye-hollows to allow for better vision, and they also developed a tough, beak-like inner mouth. They reproduce sexually and possess a luminous crest to attract mates.
Living Relatives (click to show/hide)
These are randomly selected, and organized from lowest to highest shared taxon. (This may correspond to similarity more than actual relation)
