Large Acorn Barnacles (IMAGE)

Proceedings of the National Academy of Sciences

Large Acorn Barnacles

Caption

Large acorn barnacles (Semibalanus cariosus), a dominant space occupier in rocky intertidal communities along the west coast of North America. The hummocked growth form (tall, thin, with a tendency towards a trumpet shape) induced by crowding is evident. Mussels (Mytilus spp.; black) are also visible.

Credit

Jane Lubchenco

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