Transform Boundaries The final type of boundary is one where the two plates slide against each other in a sideways motion. These boundaries between plates is referred to as transform boundaries.
The three regions of the body of the Mollusk are the head-foot, the visceral mass, and the mantle-shell.
The Foot. A mollusk has a foot, the body's muscular section, responsible for movement. The foot of some mollusks has also adapted to attaching to rocks and grasping prey. To ease movement, mollusks such as snails and slugs release secretions from their feet, then slide along the mucus, forming a trail.