Seen here are the shells of this type of marine snail
[DOC] [TLE] Seashell - Wikipedia [PAR] A seashell or sea shell, also known simply as a shell, is a hard, protective outer 
layer created .... Certain species of gastropod seashells (the shells of sea snails) 
can sometimes be common, ..... What links here  Related changes  Upload file  
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... [DOC] [TLE] Gastropod shell - Science Daily [PAR] In land snails the shell is an essential protection against the sun, and against 
drying out.