洋底（ocean floor）是大洋的主体，占海洋总面积80%左右。洋底的起伏形态与陆地一样，十分复杂，但分布很有规律。
大西洋底来的人 Man from Atlantis ; The man from the Atlantica ; The Man from Atlantis ; The Man From Atlantis Season
洋底热泉 [地物] submarine hot spring
海洋底 ocean core
洋底断裂带 ocean floor fracture zone
洋底沉积 fondothem
洋底扩张 SOF ; [海洋] ocean floor spreading ; oceanic expansion
远洋底拖网渔船 deep sea trawler
洋底流 ocean bottom current
洋底岩相 fondothem facies
海洋底部在某种程度上会滑到大陆边缘之下。
The ocean floor would kind of slide under the edge of the continent.
当海洋底部开始下沉到地幔中，它会同时将整个海底板块拖拽下去。
As the ocean floor plate begins to sink down into the mantle, it would drag or pull the entire plate along with it.
在正常的水相中，残留的磷会自己移动，沉淀到海洋底部，并混合到海洋沉积物中。
In the normal water phase, the remaining Phosphorus makes its way, settles to the bottom of the ocean, and gets mixed into ocean sediments.
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