Sessilla

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Scale bar = 5 mm

Chthamalus dalli (Pilsbry, 1916)

Common name(s): Buckshot barnacle, or brown buckshot barnacle

Balanus amphitrite

Common names: Striped barnacle, Purple acorn barnacle

Description:
Balanus amphitrite is white with purple or brown stripes. It is a small, conical, sessile barnacle.

Size:
B. amphitrite is about 1.5 cm in diameter.

Balanus glandula (Darwin, 1854)

Common name: Common acorn barnacle