Editing Gastropoda (section)

=== Digestive system ===
{{main|Digestive system of gastropods|Radula}}
The [[radula]] of a gastropod is usually adapted to the food that a species eats. The simplest gastropods are the [[limpet]]s and [[abalone]], herbivores that use their hard [[radula]] to rasp at [[seaweed]]s on rocks.{{citation needed|date=February 2025}}

Many marine gastropods are burrowers, and have a [[siphon (mollusc)|siphon]] that extends out from the [[Mantle (mollusc)|mantle]] edge. Sometimes the shell has a [[siphonal canal]] to accommodate this structure. A siphon enables the animal to draw water into their [[mantle cavity]] and over the gill. They use the siphon primarily to "taste" the water to detect prey from a distance. Gastropods with siphons tend to be either predators or scavengers.{{citation needed|date=February 2025}}