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Rock Barnacle — printable fact sheet
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Rock Barnacle
Semibalanus balanoides
The Rock Barnacle is a small, cone-shaped crustacean that attaches itself permanently to hard surfaces in the intertidal zone. It has a tough, calcareous shell made up of overlapping plates that protect its soft body from predators and desiccation. Rock Barnacles use feathery ap…
Did you know?
- Rock Barnacles can withstand being out of water for several hours at a time, thanks to their ability to seal in moisture with their tightly closing shells.
- Rock Barnacles cement themselves to rocks using a natural glue that is one of the strongest adhesives known in nature. They are hermaphroditic and capable of cross-fertilization with neighbors by extending long reproductive organs. During low tide, they tightly close their shells to retain moisture and survive until the water returns.
What I learned
Draw the rock barnacle
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