On this year's list of top 10 new species is a snail that’s whorls apart -- Opisthostoma vermiculum. Pictured is the shell of the snail -- a species that represents unique morphological evolution in its manner of shell twisting around four axes. It is endemic to a unique limestone hill habitat in Malaysia and was described by Reuben Clements, Thor-Seng Liew, Jaap Jan Vermeulen and Menno Schilthuizen. The top 10 list of new species is announced annually by the International Institute for Species Exploration at Arizona State University. Credit: Photo courtesy of Reuben Clements/World Wildlife Fund for Nature-Malaysia