Knowra Pollicipes pollicipes Pollicipes pollicipes A large stalked barnacle native to the northeastern Atlantic, attached to wave-exposed rocky shores. Its fleshy stalk and capitulum are harvested as seafood, especially in Iberia.
Stalked barnacle : A barnacle with a flexible stalk connecting its body to a surface. Pollicipes pollicipes belongs to this barnacle form, unlike sessile acorn barnacles.
Barnacle feeding : The capture of suspended food by barnacles using feathery appendages called cirri. Pollicipes pollicipes extends its cirri to filter food from moving seawater.
Percebes : Edible stalked barnacles, especially Pollicipes pollicipes, sold as a seafood delicacy in Iberia. This is the regional seafood name under which the species is commonly harvested and sold.
Cape Roca : A headland on Portugal's Atlantic coast and the westernmost point of mainland Europe. Its exposed cliffs provide habitat for the species along Portugal's coast.
Cirripedia : A subclass of crustaceans that includes barnacles. This species is a cirriped, despite its shell-covered, mollusk-like appearance.
Cirriform appendage : A slender, jointed appendage used by barnacles to collect food from water. These appendages emerge from the capitulum when the barnacle feeds.
Gooseneck barnacle fishery : The regulated commercial collection of stalked barnacles from rocky coastal habitats. Harvesting targets accessible beds of Pollicipes pollicipes and can affect local abundance.
Galician coast : The Atlantic coastline of Galicia in northwestern Spain, marked by rias, islands, and rocky shores. It is a major source region for commercially harvested percebes.
Capitulum (barnacle) : The plated upper body of a stalked barnacle, containing its feeding appendages and organs. Its conspicuous plates enclose the feeding body of Pollicipes pollicipes.
Barnacle cement : A strong protein-based adhesive secreted by barnacles to attach themselves to surfaces. Cement anchors the animal's base to rocks amid heavy surf.
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