Pacific Acorn Barnacle

Balanus glandula (commonly known as the North American acorn barnacle, Pacific acorn barnacle or common acorn barnacle) is one of the most common barnacle species on the Pacific coast of North America, distributed from the U.S. state of Alaska to Bahía de San Quintín near San Quintín, Baja California. They are commonly found in the upper intertidal zone on rocks, wood, and pier pilings. They can also be found growing on other organisms such as crustaceans, gastropods, bivalves, and other barnacles. This species is also highly adaptable to varying conditions, even being able to tolerate estuarine conditions of poor water circulation, low oxygen, and little wave action.

From Wikipedia, under CC BY-SA 4.0.

Is it venomous or poisonous?

We have no record of Pacific Acorn Barnacle being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

• Chthamalus dalli
• Epopella plicata
• Semibalanus balanoides
• Chthamalus dentatus
• Jehlius cirratus
• Tesseropora rosea

Classification

Kingdom

Animalia

Phylum

Arthropoda

Class

Hexanauplia

Order

Balanomorpha

Family

Balanidae

Genus

Balanus

Species

Balanus glandula

More species