noun
mountains and seas
Refers to the natural world of mountains and seas, often used in literary or poetic contexts, or in compounds like 山海の珍味 (delicacies from land and sea).
山海の自然を満喫する旅に出た。
I went on a trip to fully enjoy the nature of mountains and seas.
この店は山海の珍味が自慢だ。
This restaurant prides itself on delicacies from land and sea.