pose the Statements Found Below That Most Accurately Describe Locomotion for Members of Class Bivalvia. ose the statements found below that most accurately describe locomotion for members of Class Bivalvia. Check All That Apply Some bivalves are sessile and secrete substances such as cement of byssal threads to anchor their shells into position. Bivalve movement generally involves the rapid flow of water over the gills which creates a creeping motion for the creature. Some bivalves can move in a "clapping" motion that is surprisingly rapid. Bivalve movement often involves pumping blood into the foot, allowing it to act as an anchor in the substrate, and then using muscles to pull the body forward. .