The Mussel pokemon
"Musshield are incredibly weak. They are one of the most commonly fished pokemon, as they cover large portions of the sea floor."
The Shield Arm pokemon
"Upon evolution it became too big for its shell. It now uses its discarded shell as a shield to defend itself from predators."
I really wanted a mussel pokemon, so I designed one. I know it's simple and I have a lot of water types ok.
I know mussels don't become anemones but it made sense from a design perspective. The mussel's "hair" is based on some threads they use to move - yucky [link]