What is "gastropod"?

Gastropods are a large and diverse group of invertebrates that belong to the phylum Mollusca. They are characterized by a single, coiled shell and a muscular foot that they use for movement. Most gastropods are marine, but there are also many freshwater and terrestrial species. Gastropods play important roles in aquatic ecosystems, as they are decomposers, herbivores, and predators, and serve as prey for other animals. Some gastropods, such as snails, are also used as food by humans, while others, such as slugs, can be considered pests in certain agricultural settings. Overall, gastropods are an ecologically important and diverse group of animals with a range of important roles in various ecosystems.