<p>Hipponix antiquatus (Linnaeus, 1767) - apertural view of a white hoof snail shell, 1.55 cm long.  Anterior to the top &amp; posterior to the bottom.
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Family Hipponicidae - the hoof snails are hard substrate encrusters in shallow-water, high-energy marine environments.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/47445767@N05">James St. John</a>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/jsjgeology/16003468958/">Hipponix antiquatus (white hoof snail) (San Salvador Island, Bahamas) 2</a>