A photogenic Pink Volcano Barnacle (Tetraclita rubescens), thanks to Eric! Photographed on 3 July 2021.
Pink Volcano Barnacle shells are made up of four wall plates. The boundaries between the wall plates are hidden by the sculpturing on the outside, but if you find a shell washed up on the beach, you can turn it over to see where the four plates meet. [Or perhaps I'll post a picture of that view sometime!] Most other barnacle species in this area have six wall plates.
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