This is the 9050th most frequent Japanese word.
深海
Deep sea.
Here, '深海' refers to the physical environment of the deep parts of the ocean.
深海には未知の生物が多数存在します。
The deep sea harbors numerous unknown species.
In this sentence, '深海' denotes the subject of scientific study or exploration.
深海の研究は科学者たちに多くの興味を引き起こします。
Research into the deep sea stimulates significant interest among scientists.
Here, '深海' is used metaphorically to describe the depth and inaccessibility of someone's emotions or inner self.