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title: 浮島が出現、消滅、そして再出現……カナダの淡水湖 - BBCニュース
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# 浮島が出現、消滅、そして再出現……カナダの淡水湖 - BBCニュース

## TL;DR
（要約なし・原文はリンク先を参照 / No summary available; see the source link.）

## Key Points
- science / environment / nature

## Details
(本文なし。リンク先参照)

## Source
元記事: [浮島が出現、消滅、そして再出現……カナダの淡水湖 - BBCニュース](https://www.bbc.com/japanese/articles/cyvzenm13dlo) — published 2026-09-03T02:54:06Z