<p>Allied Cowry / Diminovula stigma
</p>
About 7-8mm
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/76738608@N08">Christian Gloor</a> from Wakatobi Dive Resort, Indonesia
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/christian_gloor/13532305445/">Allied Cowry</a>