New Zealand Seashore

DSC_3312 Arabic volute or pupu rore (Alcithoe arabica) shell variable in shape and colour. Populations from sheltered northerly locations have a row of strong nodules on the shoulder (left). Others from exposed and southerly locations have almost no nodules at all (right).

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DSC_3312 Arabic volute or pupu rore (Alcithoe arabica) shell variable in shape and colour. Populations from sheltered northerly locations have a row of strong nodules on the shoulder (left). Others from exposed and southerly locations have almost no nodules at all (right).

DSC 3312 Arabic volute pupu rore Alcithoe arabica variation shell swaisonii