Made up mostly of limestone formed from the skeletal remains of sea creatures, the submerged regions of the tidal flats are carved by channels where water flows between land.

这些群岛主要是由海洋生物残骸形成的石灰岩构成，潮汐滩的水下部分被流动的水分割成河道。

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Currently the project focuses on two types of forest environment - the submerged forests or "igapos" and the "terra firme", or dry land.

当前，该项目专注于两种森林环境——水下森林或者叫“igapos”，和“terra firme”或者叫干地。

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The river submerged large tracts of land.

河水淹没了大片土地。

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The giant wave coincided with extreme weather and rising sea levels and was part of a process that submerged land beneath the North Sea.

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Others have seen their land almost totally submerged.

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Several millennia ago, the bay was a huge open floodplain, but rising sea levels and geological shifts submerged the land and created a network of 40-odd islands, for which the bay is now famous.

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