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Acorn barnacle

Balanus glandula


I found this group of barnacles attached to the wall of a sea cave. The barnacles were interspersed with their predators, snails (photo 3), in a somewhat linear fashion (photo 2), giving the group of organisms a sort of mosaic appearance.


Observed at Tongue Point Marine Life Sanctuary in the intertidal zone.


In image 3, you can see the snails in the shallows trying to break into the barnacles' sealed shells. Several other organisms are pictured as well, including limpets (on the left).

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mauna Kunzah
Spotted by
mauna Kunzah

Port Angeles, Washington, United States

Spotted on Jun 16, 2019
Submitted on Oct 17, 2020

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