(かいよう)

かいよう
noun
ocean, sea
1. ocean, sea
Large bodies of salt water; the world's oceans. More formal and scientific than (うみ).
Ocean pollution has become a serious problem.
I am researching marine life.
Japan is a maritime nation.
To protect marine resources.
I'm majoring in oceanography.

海洋(かいよう) is a more formal/scientific term than (うみ), often used in technical, academic, or official contexts.

Common collocations:

Related terms: