This is a gooseneck barnacle.

Gooseneck barnacles are called dog claw snails in China and are barnacle-like creatures. Also known as sea chicken feet, it is known as the "seafood from hell". It lives in the crevices of islands and reefs where ocean currents exchange frequently. Its growth environment has high requirements for water quality, high trace elements, and sweet taste.

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Gooseneck Barnacle

It is a delicacy that Spanish and other Europeans are crazy about. This creature is fifteen centimeters long and Rod-shaped gooseneck barnacle.

A barnacle-like crustacean with a long handle-like head attached to the base, with white calcareous bone plates and orange opening edges. It keeps extending and contracting its brown feathery fence-like appendages all day long to feed on plankton. Often attached to driftwood or other objects.