The thatched barnacle is common barnacle found along the Northern Pacific coast from Alaska to Baja California, but is most common on the rocky shores of Washington state and Oregon. It is easy to identify by the interesting vertical ribbing on the six wall plates that form its shell. This one was found at low tide on a rocky outcrop in Washington's Deception Pass.
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America, Animalia, Archaeobalanidae, Arthropoda, Cirripedia, Crustacea, Deception Pass, Deception Pass State Park, Maxillopoda, PNW, Pacific NW, Pacific Northwest, Semibalanus, Semibalanus cariosus, Sessilia, Skagit County, USA, United States, Washington, acorn barnacle, animal, aquatic, arthropod, barnacle, closeup, crustacean, food, horse barnacle, invertebrate, marine, nature, ocean, rock barnacle, shell, shellfish, shore, summer, thatched barnacle, water, wild, wildlife, haystack barnacle
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