pics of snail out of its shell

j&j,s tank

New Member
Its been 3 days and the snail is still out of its shell. Does anyone know why it would leave its shell. I did a 20% water change a week ago and all water checks are fine. thanks for any info. :thinking:


 

hot883

Active Member
Originally Posted by ryanhayes9
maybe it got to big for it?
snails shells grow with the snail. So who knows why? Wow. Great pic. Thanks for sharing. Don't know how to help you though. Sorry.
 

mercury724

Member
maybe it got tired of carrying its heavy shell around
just kidding. would it survive for a long time without a shell? :thinking:
 

merredeth

Active Member
Can you please list your water parameters? I've NEVER seen anything like this before. Something tells me that this snail is going to be a goner soon. Snails don't move from shell to shell so I'm thinking something is either going on with the snail or with the parameters. :notsure:
Denise M.
 

celacanthr

Active Member
I was reading something about snails the other day, which was written by Ronald Shimek, and it said that shells are only there for protection, and that snails can live though their whole life without them, but the reason you don't usually see them in the wild is because they are obviously an easy target without the shell.
 

isistius

Active Member
here's a little more info in case you wanted to know:
The gastropods, gasteropods, or univalves, are the largest and most successful class of mollusks, with 60,000-75,000 extant species known, comprising the snails and slugs as well as a vast number of marine and freshwater species.
Description

Snails are distinguished by torsion, a process where the body coils to one side during development.
They typically have a well-defined head with two or four sensory tentacles, and a ventral foot, which gives them their name (Greek gaster, stomach, and poda, feet). The eyes that may be present at the tip of the tentacles range from simple ocelli that cannot project an image (simply distinguishing light and dark), to more complex pit and even lens eyes [1]. The larval shell of a gastropod is called a protoconch.
Most members have a shell, which is in one piece and typically coiled or spiralled that usually opens on the right hand side (as viewed with the shell apex pointing upward). Several species have an operculum that operates as a trapdoor to close the shell. This is usually made of a horny material, but in some molluscs it is calcareous. In some members, the slugs, the shell is reduced or absent, and the body is streamlined so its torsion is relatively inconspicuous.
While the best-known gastropods are terrestrial, more than two thirds of all species live in a marine environment. Marine gastropods include herbivores, detritus feeders, carnivores and a few ciliary feeders, in which the radula is reduced or absent. The radula is usually adapted to the food that a species eats. The simplest gastropods are the limpets and abalones, both herbivores that use their hard radulas to rasp at seaweeds on rocks. Many marine gastropods are burrowers and have siphons or tubes that extend from the mantle and sometimes the shell. These act as snorkels, enabling the animal to continue to draw in a water current containing oxygen and food into their bodies. The siphons are also used to detect prey from a distance. These gastropods breathe with gills, but some freshwater species and almost all terrestric species have developed lungs. While the gastropods with lungs all belong to one group (Pulmonata), the gastropods with gills are paraphyletic.
Sea slugs are often flamboyantly coloured, either as a warning if they are poisonous or to camouflage them on the corals and seaweeds on which many of the species are found. Their gills are often in a form of feathery plumes on their backs which gives rise to their other name, nudibranchs. Nudibranchs with smooth or warty backs have no visible gill mechanisms and respiration may take place directly through the skin. A few of the sea slugs are herbivores and some are carnivores. Many have distinct dietary preferences and regularly occur in association with certain species.
Geological history

The first gastropods were exclusively marine, with the earliest representatives of the group appearing in the Late Cambrian (Chippewaella, Strepsodiscus). Early Cambrian forms like Helcionella and Scenella are no longer considered gastropods, and the tiny coiled Aldanella of earliest Cambrian time is probably not even a mollusc. By the Ordovician period the gastropods were a varied group present in a range of aquatic habitats. Commonly, fossil gastropods from the rocks of the early Palaeozoic era are too poorly preserved for accurate identification. Still, the Silurian genus Poleumita contains fifteen identified species. Fossil gastropods are less common during the Palaeozoic era than bivalves.
Most of the gastropods of the Palaeozoic era belong to primitive groups, a few of which still survive today. By the Carboniferous period many of the shapes we see in living gastropods can be matched in the fossil record, but despite these similarities in appearance the majority of these older forms are not directly related to living forms. It was during the Mesozoic era that the ancestors of many of the living gastropods evolved.
One of the earliest known terrestrial (land-dwelling) gastropods is Maturipupa which is found in the Coal Measures of the Carboniferous period in Europe, but relatives of the modern land snails are rare before the Cretaceous period when the familiar Helix first appeared.
 

isistius

Active Member
In rocks of the Mesozoic era gastropods are slightly more common as fossils, their shell often well preserved. Their fossils occur in beds which were deposited in both freshwater and marine environments. The "Purbeck Marble" of the Jurassic period and the "Sussex Marble" of the early Cretaceous period which both occur in southern England are limestones containing the tightly packed remains of the pond snail Viviparus.
Rocks of the Cenozoic era yield very large numbers of gastropod fossils, many of these fossils being closely related to modern living forms. The diversity of the gastropods increased markedly at the beginning of this era, along with that of the bivalves.
Certain trail-like markings preserved in ancient sedimentary rocks are thought to have been made by gastropods crawling over the soft mud and sand. Although these trails are of debatable origin, some of them do resemble the trails made by living gastropods today.
Gastropod fossils may sometimes be confused with ammonites or other shelled cephalopods. An example of this is Bellerophon from the limestones of the Carboniferous period in Europe which may be mistaken for a cephalopod.
Gastropods are one of the groups that record the changes in fauna caused by the advance and retreat of the Ice Sheets during the Pleistocene epoch.
Taxonomy

The taxonomy of the Gastropoda is under constant revision, but more and more of the old taxonomy is being abandoned. Nevertheless terms as "opisthobranch" and "prosobranch" are still being used in a descriptive way. In a sense, we can speak of a taxonomic jungle when we go down to the lower taxonomic levels. The taxonomy of the Gastropoda can be different from author to author. But with the arrival of DNA-sequencing, further revisions of the higher taxonomic levels are to be expected in the near future.
According to the traditional classification there are four subclasses. :
Prosobranchia (gills in front of the heart).
Opisthobranchia (gills to the right and behind the heart).
Gymnomorpha (no shell)
Pulmonata (with lungs instead of gills)
According to the newest insights (Ponder & Lindberg, 1997), the taxonomy of the Gastropoda should be rewritten in terms of strictly monophyletic groups. Integrating these findings into a working taxonomy will be a true challenge in the coming years. At present, it is impossible to give a classification of the Gastropoda that has consistent ranks and also reflects current usage
 

petjunkie

Active Member
That's about the grossest thing I've seen in a while and at breakfast, no less. Did it's shell just fall off? Sorry haven't been keeping up on this thread.
 

merredeth

Active Member
I'm curious. Do you know if the shell was severely damaged?
Right now I have a blue legged hermit that seems to like a shell that is all busted up. I would have thought he would have moved by now, but it has been a week and he's still dragging that ghetto house around. With all the shells I have in my boneyard, you would think he would find a better home.
We've been laughing at this crab for a week because his ghetto house reminds me of a house I went to for a party when I was in college.
Denise M.
 
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