Identification
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Caption
Clea sp., a Thai freshwater snail. Neogastropoda can usually be recognized by their long incurrent siphon and accompanying siphonal structure on the base of the shell. Nearly all neogastropods are marine. Clea is a rare freshwater genus.
Dr. John B. Burch, Ph.D.
(photographer, copyright holder), Mollusk Division, Museum of Zoology, University of Michigan

