thatched barnacle

Semibalanus cariosus, commonly known as the thatched barnacle, rock barnacle or horse barnacle, is a species of acorn barnacle occurring in the northern Pacific Ocean. Description This barnacle has six wall plates which are sculpted with vertical tube-like ribs which extend downwards onto the rock in projections rather like the edge of a thatched roof. The rostrum overlaps the wall plates and the terga form a beak when the barnacle is closed.

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Balanus es un género de crustáceos cirrípedos de la familia Balanidae, conocidos vulgarmente como bellotas de mar. Descripción Muestra una relación de inquilinismo siempre en zonas costeras a poca profundidad. Aunque puede estar esporádicamente fuera del agua.