Balanus crenatus

Balanus crenatus is a species of acorn barnacle in the Balanidae family. It is found in the North Pacific and the North Atlantic Ocean. The shell of B. crenatus is made of six calcareous plates and grows up to {convert|25|mm} across. The upper edge of the plates are toothed and the shell is often tilted to one side. The opercular aperture is diamo...
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