Habitat with rocks and water containing nutrients for the Ramshorn snail

Helisoma trivolvis
are heterotrophs. This means they depend on other organisms for their nourishment. They graze on biocover that grows on rocks, such as plants and algae (Smith, 1989). Most Pulmonates are herbivorous in gereral. The way these snails acquire nutrients is through a structure called a radula. A radula is made of chitinous material and it is expelled from the snail to scrape their food from surfaces (Smith, 1989). Think of it as a tongue with little teeth on it and it's expelled from the buccal cavity of the snail when it needs to feed. Food is digested in the stomach or by digestive glands. The ramshorn snail has an advanced circulatory system that helps deliver nutrients to all parts of its body. Waste is eliminated from the body by the snail blowing water or air powerfully from it's lung (Hickman, 2009).

Next, check out how these snails reproduce by going to the reproduction page.