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12 of the most interesting snails in the world

By: Bryan Nelson on July 10, 2014, 9:20 a.m.
Croatian cave snail

Photo: Alexander M. Weigand/Subterranean Biology

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Croatian cave snail

This ghostly species, recently discovered in Croatia's Velebit caves — one of the deepest cave systems in the world — is particularly noteworthy for being almost entirely transparent. The see-through gastropods are true cave-dwellers and have lost their sense of sight.