The Bohai Sea is China's continental sea, while the Yellow, East China and South China seas are marginal seas of the Pacific Ocean.

渤海为中国的内海，黄海、东海和南海是太平洋的边缘海。

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He theorized that with the use of watercraft, people gradually colonized unglaciated refuges and areas along the continental shelf exposed by the lower sea level.

他的理论是，随着船只的使用，人们沿着因海平面下降而暴露的大陆架逐渐移居到未冻结成冰的区域。

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Lowered sea levels exposed the shallow continental shelf beneath the Bering Sea.

下降了的海平面使白令海底的浅大陆架露了出来。

《柯林斯英汉双解大词典》

As Director of the Office of Legal Affairs of the Ministry of Foreign Affairs in Greece from 1976 to 1995, he had represented the Ministry in the case of the Continental Shelf of the Aegean Sea in front of the International Court of Justice (The Hague) in 1976.

UNESCO: CULTURE

His aim during a 100-day voyage that will take him from San Francisco, California, to Sydney, Australia, is to find the "Great Pacific Garbage Patch" between California and Japan -- a massive sea of plastic trash that environmentalists say could soon be larger than the continental United States.

CNN: Environmentalist: It's becoming a plastic world