ナショナルジオグラフィックのインスタグラム(natgeo) - 12月4日 16時39分

Photo by @Joel Sartore / Historically nine species of Partula snails could be found on the South Pacific island of Tahiti. Sadly, three are now extinct, and a fourth species, Partula nodosa, pictured here @stlzoo, is believed to be extinct in the wild. When the French Polynesian government allowed the importation of African land snails to Tahiti, little was known about their impact. Soon after introduction, African land snails began eating local crops; to solve this problem, another predatory snail was brought to the island. But instead of eating the African snails, the newcomers ate the Partula snails, leading to their decline. Fortunately, some Partula snails survive in zoos, where they are being bred with the hope that they can be returned to their native island. To see more species featured in the Photo Ark, follow me @Joel Sartore. #PhotoArk #savetogether

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