波的尼亚湾
波的尼亚湾（芬兰语：Pohjanlahti；瑞典语：Bottniska viken）是一个垃拉波罗的海北部个海湾。
介拉芬兰西岸搭瑞典东岸之间，南面以奥兰群岛搭群岛海为界。此湾南北长725公里、东西阔80到240公里弗等，平均深度为60米，最深处为295米，面积为117,000平方公里。
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