I notice that shell and seashell have a lot of mix-and-match posts, mostly posts that belong in seashell but are in shell, such as post #732198. Shell also has legitimate posts that separate it from seashell, post #730387 post #541090 post #488302 and post #603345 to name a few.
Is a hierarchy necessary for these cases? I would think that certain types of shell should implicate shell.
Of further note are the tags mollusc_shell, clam, seashells (plural), and shell_bikini. Implications and aliases to the proper tags could benefit each of these.
Updated by jxh2154