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Observations on the intertidal barnacles (Cirripedia: Balanomorpha) at Fossil Island, Tasman Peninsula: physical tolerances, orientation and fertilisation

Six species of barnacle are found intertidally at Fossil Island. Tolerances of the species to 
desiccation and temperature could be related to their position on the shore. The four common 
species all show significant orientation to water currents: in Catornerus polyrnerus the orientation 
is reversed lower on the shore. Strong evidence is presented that isolated C. polyrnerus individuals 
can self-fertilise.