Most Mollusks that live on land will have a type of foot that will pull and push them forward. Their foot will also do a variety of other things too, like grasping, burrowing, anchoring, and sometimes even swimming. Other Mollusks that live in the water can dispel water from cavities in their bodies propelling them forward, an example being, a squid. The third kind of Mollusks will sit and cling to a rock their and hold on their whole life, kept safe by some handy camouflaging.