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Acorn Barnacle
笠藤壺
Tetraclita spp.
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Has a cone-shaped shell appearing to be similar to oysters and mussels but is actually a crustacean more related to crabs and lobsters.
雖然固定在岩石上並配有像牡蠣和蚌一樣的硬殼，但實際上牠們與螃蟹和龍蝦的關係更為密切
Despite being sessile in its adult stage, barnacles are mobile drifters as plankton in their larval stage.
儘管藤壺成體固著不動，但在幼蟲階段時牠們是可以自由漂流的浮游生物
During high tide, it extends their feathery appendages to filter and capture plankton carried by the waves for food.
漲潮時會伸出羽毛狀的附肢來過濾和捕獲浮游生物作為食物
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