Tectonatica violacea is a moderately common species found in lagoon sand or in sand pockets on lagoon pinnacles at depths of about 5 to at least 16m. Shells from other areas, particularly those with darker sand, have more elaborate brown markings on the shell; those from the Marshalls' white sand are lighter in color.
The columella is stained purple in this species, and the calcareous operculum is white.
Created 6 September 2015
Updated 7 October 2016
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