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Tasty snail species leaves pearly shells as gifts of sea

By Susan Scott

POSTED: 01:30 a.m. HST, Dec 30, 2013

~~<p>Of all the things I find on the world's ocean floors and beaches, the round trapdoors of some snail species, called opercula, are high on my list of favorites.</p>
<p>Also known as cat's eyes, opercula are calcium carbonate disks connected to the snail's muscular foot. When disturbed, the snail withdraws its foot into its shell home and slams the door behind it.</p>
~~

Of all the things I find on the world's ocean floors and beaches, the round trapdoors of some snail species, called opercula, are high on my list of favorites.

Also known as cat's eyes, opercula are calcium carbonate disks connected to the snail's muscular foot. When disturbed, the snail withdraws its foot into its shell home and slams the door behind it. Login for more...



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