This is the 912th most frequent Japanese word.
海洋
Ocean; marine.
Here, "海洋" refers to the Earth's oceans collectively, emphasizing its vast presence.
海洋は地球の大部分を覆っています。
The ocean covers the majority of the Earth's surface.
In this sentence, "海洋" specifically describes the marine environment where organisms live.
この地域の海洋生物は非常に多様です。
The marine life in this region is extremely diverse.
"海洋" is used here to associate the term with oceanic studies or ocean-related research fields.