The tag alias #46999 shells -> shell has been approved.
Reason: Even though shells is a character tag at the moment, every post under it seems to use it for either seashells, bullet shells, or animals' shells. Judging by all the false positives, I'd say the alias is warranted.
(only the latter actually belongs under the shell tag, I'll clean up shells after other people get the chance to look through it)
EDIT: The tag alias shells -> shell (forum #295074) has been approved by @Millcore.
Updated by auto moderator