(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.
There is a marine predator slug which eats other snails without a tooth in its mouth. There are 43,000 gastropod species on our earth today, measuring between a millimetre and 75 centimetres. Snails not only live on land, but also in freshwater and in the sea.There are colourful sea slugs among them, as well as cowry shells, which have been money in Africa for centuries.The neurobiology of learning was researched using snails.Only a very little part of them is edible or a garden pest.here is a marine predator slug which eats other snails without a tooth in its mouth. There are 43,000 gastropod species on our earth today, measuring between a millimetre and 75 centimetres. Snails not only live on land, but also in freshwater and in the sea.