Barnacle

Ivory Barnacle (Balanus eburneus)


SHELL LENGTH: Approximately 1 inch (2.54 cm)

Ivory Barnacles can be found attached to any solid surface in the inter-tidal zone. Barnacles are actually more closely related to crabs than they are to clams or oysters. After a free-swimming stage in their life cycle, barnacles attach to piers, rocks, and other objects, where they will remain for the rest of their lives. Barnacles capture zooplankton and algae from the water with their long legs. At low tide, barnacles are able to tightly close the "doors" of their shell to keep from drying out in the hot summer sun.
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