Neritoida is a taxonomic order of small to medium-sized marine snails that belong to the class Gastropoda. They are commonly referred to as neritoid snails or nerites. These snails are characterized by their sturdy and often smooth or ribbed shells, which typically display a semi-globular or rounded shape. The shells are usually thick and heavy, providing protection to the animal inside.
Neritoida snails are widely distributed across various marine habitats, including both saltwater and freshwater environments. They are known for their ability to adapt to different water conditions, establishing themselves in intertidal zones, rivers, streams, ponds, and even brackish waters. These gastropods are usually found attached to rocks, stones, or other hard substrates, using their strong foot to cling securely.
These snails are herbivorous, feeding on algae and other detritus found on surfaces. They possess a rasping tongue-like structure called the radula, which aids in scraping off food particles. Typically, neritoida snails have a slow locomotion and are primarily active during low tides or when water conditions are suitable.
The Neritoida order consists of numerous families, including Neritidae, Neritiliidae, and Neritopsidae, among others, encompassing a wide range of species. Many neritoid snails are highly valued in the aquarium trade due to their attractive shells and algae-eating habits. Some species are also utilized in certain cultures as a source of food.
Overall, neritoida refers to a diverse group of marine snails that exhibit various adaptations and ecological roles, contributing to the complexity and biodiversity of aquatic ecosystems.
