Balanoides — Balanus
The opening at the top is diamond-shaped and protected by four plates that form a "door" to prevent drying out (desiccation) during low tide.
It thrives in the intertidal zone , where it is regularly submerged and exposed by the tide. balanus balanoides
Adults generally reach up to 15 mm in diameter , though some records suggest they can range up to 7.5 cm in certain conditions. The opening at the top is diamond-shaped and
Balanus balanoides , now more commonly known by its accepted scientific name , is a widespread species of sessile acorn barnacle. It is a dominant member of the rocky intertidal zones in the North Atlantic and North Pacific. Physical Characteristics Balanus balanoides , now more commonly known by
It is famous in ecological studies for its competition with the barnacle Chthamalus stellatus . While Balanus can outgrow and smother Chthamalus in lower, wetter areas, it cannot survive as high up the shore as Chthamalus due to a lower tolerance for drying out.
