Marine snails whether freshwater or terrestrial are called the Gastropods, and are the most diversified class belonging to the mollusks family. These coiled shelled snails dated back to the Cambrian period. Gastropods have become so successfully adapted to almost every kind of existence on earth today. The marine variety of snail mostly lives in shallow waters, but could be found in depths of more than 15,ooo feet deep. Terrestrial Gastropods have colonized to the land and are known as the land snail and slug. Gastropods can be found today, worldwide in seas, oceans, rivers, and on land. . Gastropods usually preserve their entire shell, leaving only an empty mold. Their existence today amazes me.
