Barnacle shells
Barnacles are Crustacean animals in the class of invertebrates as crabs, prawns etc. The larvae are free swimming and go through several swimming stages until they eventually anchor to rock or other hard surfaces such as piers and boats. Barnacles then form protective plates which encases them and are then unable to move. They sweep plankton into the centre of their encasement when immersed at low tide. Often barnacles are above the waterline in lowtide and can endure high temperatures on the rock upon which they live.
Barnacle shells
Barnacles are Crustacean animals in the class of invertebrates as crabs, prawns etc. The larvae are free swimming and go through several swimming stages until they eventually anchor to rock or other hard surfaces such as piers and boats. Barnacles then form protective plates which encases them and are then unable to move. They sweep plankton into the centre of their encasement when immersed at low tide. Often barnacles are above the waterline in lowtide and can endure high temperatures on the rock upon which they live.