Animal Crossing: New Horizons acorn barnacle

I got an acorn barnacle! Will it grow into an oak barnacle?

Do not mistake the acorn barnacle for a relative of the calm. Tut-tut, mollusks they are not. Barnacles are cousins to crabs and lobsters, you see. Though the family resemblance is hard to spot. Acorn barnacles may also seem to live a stationary life, what with being attached to rocks and such. But truth be told, baby barnacles are avid travelers, drifting shell-less about the sea before settling down. Once they find a good rock to affix themselves to, they float free no more. Which begs the question... Do adult acorn barnacles ever look out across the open sea...and long for youthful adventure once more?