Aplacophorans are marine benthic, deep-water, shell-less mollusks distributed across the world oceans. Aplacophorans are cyclindrical and resemble worms more than other mollusks, but they do have a radula - the chain-saw like tongue characteristic of most mollusks.
Most species are no larger than 5 cm in length. Typically, Aplacophorans borrow in the substrate. Most are either carnivorous or detritivorous.
This group is comprised of two taxa, Solenograstres and Caudofoveata which combined contain about 320 species. At least 23 species occur in the Arctic.
Page Author: Bodil Bluhm
Created: Sept 24, 2010