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何謂連島沙洲現象
靜岡縣西伊豆町的「三四郎島」是象島, 中之島, 沖之瀨島與高島等4個島的總稱, 位於距堂島約200公尺的海面上。
退潮時, 由於沖之瀨島與中之島會相互連結, 因此也會將一併合稱為「中之島」。
退潮時, 離陸地最近的象島會發生「連島沙洲現象」, 此時會露出寬約30公尺的岩石地帶, 不弄濕雙腳便可直接橫渡走過。
連島沙洲現象即為平時相隔著大海的陸地與島嶼之間, 於退潮時露出海底呈現相互連接的現象, 法國的聖米歇爾山等地均因此聞名。
若海水低於50公分, 你可以看到它。
