Blue Australwink Nodilittorina unifasciata
The Blue Australwink ranges from southern Queensland, down New South Wales, across Victoria, South Australia and north to North West Cape, Western Australia.
It occurs generally throughout southern Australia south of the Tropic of Capricorn. It is very rare or even absent across the Great Australian Bite.
The Blue Australwink is found at and above high tide levels, often in large numbers, clustered on exposed rocks and rock faces.
Juvenile Blue Australwinks are often found clustered together, low on the shore. But as they grow in size they migrate further and further up the shore, to sometimes quite high levels far above high tide level into the spray region. Here they tend to live a more solitary life, although they do congregate around moist cracks, or under shelter. It feeds on lichens.
The Blue Australwink breeds throughout the year. Formerly known as Littorina mauritiana (Lamarck, 1822), Banded Periwinkle, Melaraphe, Littorina, Austrolittorina. The Blue Australwink is a herbivore.
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