Shell-less is used when a character present in a post is seen without its shell, this tag must be used if: the shell-less character is normally known with a shell. For example... Etc...
Generally, when this tag is used: the shell-less character is nude (but that's not always the case!). Some Examples:
Please note:
If the shell of a character/species is still visible on the post, add the shell tag too.
Examples:
See also: