Remipedes: Remipedia

Remipedes usually swim upside down in open water inside caves. They are sometimes found swimming, resting, or grooming on the bottom. The antennae are cleaned by drawing them through the trunk limbs, while the trunk limbs are cleaned with the mouthparts.

Remipedes are hermaphrodites (her-MAE-fro-daits), with individuals having the reproductive organs of both males and females. The egg-producing organs, or ovaries (OH-veh-reez), are located in the head. The tubes or ducts leading from the ovaries to the outside of the body open in the trunk segment that has the seventh pair of trunk limbs. The male reproductive organs open at the fourteenth pair of trunk limbs. The males produce sperm packets. Very little is known about how remipedes develop, other than the juveniles resemble the adults and have fewer trunk segments.