Swainsonia casta
(Gmelin, 1791)
41.9mm
Swainsonia casta
is moderately uncommon
to sometimes moderately common. It lives in sand on lagoon, pinnacle and seaward
reefs, usually at depths of 8 to at least 20m.
The brown band is periostracum,
which sometimes wears off the white shell in life and will disappear completely
if an empty shell is soaked in chlorine bleach.
With periostracum.
Periostracum removed.
Created
6 September 2015
Updated 1 April 2020
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