Malaysian Trumpeter Snail. Play media. For example, the Chinese mystery snail can lay up to about 100 eggs at a time, but Ramshorn snails will usually only lay 10 to 12. Physical Description. Land snails are often covered in the slime they produce to help them move. Google: Pond Snail. Some prefer algae and live vegetation, some prefer decaying plant matter, some are carnivores, and some eat a bit of everything! I clean the algae dust every few days off my front glass with my net but appearently I accidently caught an astrea snail that was on the glass in the net and didn't know it so I put the net up in the tank stand/cabinet where I always do. Sea snails are easier to clean than land snails. Periwinkle, in zoology, any small marine snail belonging to the family Littorinidae (class Gastropoda, phylum Mollusca).Periwinkles are widely distributed shore (littoral) snails, chiefly herbivorous, usually found on rocks, stones, or pilings between high- and low-tide marks; a few are found on mud flats, and some tropical forms are found on the prop roots or mangrove trees. The eggs typically hatch after 1 to 5 weeks. Mystery Snails. It would matter what kind of sea snail it is, if it even is a sea snail. So knowing their diet can play a large role in how long they live … Nerites are commonly sold as freshwater snails, even though they breed in brackish water. Aquarium snails have a lot of variety, they each have their own dietary preference and habitat in the tank. Most shells are spirally coiled while some sea snails, commonly called the impetus, have a conical shell. Sea snails can be found throughout the world's oceans. Recently, the smallest land snails, Angustopila dominikae, have been discovered in China, and measure 0.86mm long. Anatomy. well for whatever reason AT LEAST 24hrs later I happened to pick up the net and notice the snail still in there (with no water of course). A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. But that’s nothing compared to the sheer size of some sea slugs. Spixis. Turbo Snails are also saltwater snails, but can adapt to live in freshwater. Sea snails are a very large group of animals and a very diverse one. Snail moving on a wet ground. Sea snail varieties do not have this problem. The largest living species of sea snail is Syrinx aruanus; its shell can measure up to 90 cm (35 in) in length, and the whole animal with the shell can weigh up to 18 kg (40 lb). Wash them and rid them of sand by putting them in a bucket of clean water for 15 to 30 minutes. Europe’s ashy-grey slug is 10 inches long. 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