* Soft body: Mollusks have soft bodies that are not covered by a hard exoskeleton. This makes them vulnerable to predators, but it also allows them to move more easily and adapt to different environments.
* Mantle: The mantle is a layer of tissue that covers the body of a mollusk. It secretes a protective shell or other hard outer covering.
* Foot: The foot is a muscular structure that mollusks use to move. It can be used for crawling, swimming, or burrowing.
* Gills: Mollusks have gills that they use to breathe. These gills are located in the mantle cavity, which is a space between the mantle and the body.
* Radula: The radula is a rasping tongue that mollusks use to scrape food. It is made up of rows of tiny teeth.
* Nervous system: Mollusks have a simple nervous system that consists of a few ganglia, or clusters of nerve cells.
* Digestive system: Mollusks have a digestive system that includes a mouth, esophagus, stomach, and intestine. They also have a digestive gland that secretes enzymes to help break down food.
* Circulatory system: Mollusks have an open circulatory system, which means that their blood is not confined to vessels. Instead, it flows through open spaces in the body.
* Excretory system: Mollusks have an excretory system that includes kidneys and ducts that carry waste products away from the body.
* Reproductive system: Mollusks have a variety of reproductive systems. Some species are sexually reproducing, while others are asexually reproducing.