海かい洋よう性せい

noun which may take the genitive case particle 'no'

marine; maritime; oceanic

Used as a no-adjective to describe something related to the sea or ocean, often in scientific or technical contexts.

• 海かい洋よう性せい気き候こうは、年ねん間かんを通つうじて気き温おんの変へん化かが小ちいさい。

  An oceanic climate has small temperature changes throughout the year.

noun

oceanity

A technical noun referring to the degree or quality of being oceanic; rare outside specialized literature.

• この地ち域いきの海かい洋よう性せいは、気き候こうデータから明あきらかだ。

  The oceanity of this region is clear from the climate data.