(of fish) migrating from salt water to spawn in fresh water, as salmon of the genera Salmo and Oncorhynchus (distinguished from catadromous). Origin of anadromous.
A: A snail scrapes its food, rather than chews it like we humans do. A flexible structure called the radula in the snailâs mouth is lined with neatly organized rows and columns of tiny tooth-like projections. The snail moves its radula over the food, scrapes off bits of it, and swallows.
Snails that do not have a shell are not snails, but slugs. In order to break down their food, most snails have thousands of microscopic tooth-like structures located on a ribbon-like tongue called a radula.The radula works like a file, ripping the food into small pieces for the hungry snail.Snails are generally herbivores, primarily eating vegetation such as leaves, stems and flowers. Some larger snail species however, are known to be more predatory animals either being omnivores or, in some cases, full-on carnivores.Due to their relatively small size, and slow paced movement, snails are preyed upon by numerous animal species all around the world.nails that do not have a shell are not snails, but slugs. In order to break down their food, most snails have thousands of microscopic tooth-like structures located on a ribbon-like tongue called a radula.