this is a shell 🐚

this is a hermit crab: {#c4813a ⍾} or maybe it isn't? but a shell is a shell is a shell is a shell. hell. a list of hermit crab shells: natural gastropod shells (most common: periwinkles, whelks, moon snails, turbo, nerites, etc.) shells of other mollusks (bivalves) hollow pieces of wood hollow stones or coral rubble pieces of bamboo glass bottles and bottle caps plastic bottle caps and containers metal bottle caps pen caps and marker caps shotgun shells and bullet casings small tin cans a sardine tin broken pottery shards seashell fragments (partial shells, stacked or wedged) golf balls human teeth lego pieces lightbulbs snail shells borrowed from land species