Now, in the case of slugs and snails, which are terrestrial animals, the problem of shell weight becomes especially serious (because gravity affects them more than their aquatic counterparts), so it seems logical that animals with small shells would have at least a locomotory advantage. probabaly because snails can live further from water than slugs can and the shell holds in water better, allowing better diffusion of O2 over their gills (yep snails HAVE gills) in dryer environments. Madeye. It took them a few days to become water logged but I do see my snails scraping their tongues against it once in a while. Fish loves snails and it is a good source of food for them. A snail’s slimy organs and parts follow suit, developing with a twist that echoes the asymmetrical shell — a fact that inspired a team of researchers to identify that trait’s source. So glad to have found this, as my 5y twins have been loving finding snails in our garden, and keeping them in a box for a day. Most likely if he isnt in there and you have fish in the tank the fish probably ate him. So you CAN keep them for longer term, right? That's another thing that varies from species to species. I’m sure they’d love a more permanent home for them, so will have … If you were to cut open a snail shell, you'd notice several main layers in the cross-section. ... Do you think I should leave a tiny slice in there for the pest snails? reply #10. The gastropod shell is part of the body of a gastropod or snail, a kind of mollusc.The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage.Some gastropods appear shell-less but may have a remnant within the mantle, or the shell is reduced such that the body cannot be retracted within (). My fish did that to our snails. The shell of Helicodonta obvoluta seems to look the same from above and below, as flat and round like a loaf of cheese, which is why the species is also called cheese snail.However, upper and lower side of the shell are clearly different, the upper side showing the spire of whorls, though without a … If you want to have a snail i would but it in a seperate little tank Most shells are spirally coiled while some sea snails, commonly called the impetus, have a conical shell. The shell is a structure which protects all or part of an animal's body. Although Rabbit snails entered the aquatic community around 2007-2008, they are still not very common in the aquarium world. And also, do you have to provide them with larger shells for growing at all? Most snails possess rightward-pointing shells, but there are a few whose shells are oriented toward the left. Their shells shouldn't shed so it could simply be a lack of calcium in their diet. I accidentally got some (what I assume, they are little brown kind of oval shells with a swirl at the end) pest snails from a live plant I put in my tank quite a few months ago. for one reason or another snails need shells and slugs don't. And in some species, the shell can coil in either direction. Sea snails can be found throughout the world's oceans. A sea snail has a soft body that is usually protected by a shell. Snail shells turning white? While turtles are perhaps the best known examples, animals with shells also include shrimp and bivalve mollusks such as clams and snails. Rabbit snail (Tylomelania) is a genus of viviparous freshwater snails, which came to us from freshwater lakes of Sulawesi, Indonesia.Currently, there are around 50 described species of Rabbit snails in science. You could also feed them foods high in calcium such as kale and spinach. Physical Description . Sea snails are hard to be preyed because of their hard-protective tank. Again, I don't want their population to thrive. They occur in nature on both vertebrates and invertebrates.The shell functions as a shield to protect the animal according to its individual needs..