Protodrilus
Both Polygordius and Protodrilus live in sand, but Protodrilus may move by using the bands of cilia encircling its segments and the longitudinal ciliated ventral groove, whereas Both Polygordius and Protodrilus live in sand, but Protodrilus may move by using the bands of cilia encircling its segments and the longitudinal ciliated moves by contracting its […]



















