Ice Anemones to Dragon Trees: Top Species of Year Named

May 22, 2014 4:24 PM

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Living in complete darkness, nearly 3,000 feet below the surface in the Lukina Jama-Trojama caves of western Croatia, is this eye-less snail, Zospeum tholussum. It also has no shell pigmentation, which gives it a ghost-like appearance.

Even by snail standards, Zospeum tholossum moves slowly, creeping well less than an inch a week. Researchers suspect these small snails, measuring only 0.08 inch long, travel in water currents or hitchhike on other cave animals, such as bats or crickets, to travel longer distances.

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