GEOLOGY

Detailed explanation-1: -Marine is an adjective meaning of or pertaining to the sea or ocean.

Detailed explanation-2: -ma·rine mə-ˈrēn. : of or relating to the sea. marine life. : of or relating to the navigation of the sea : nautical, maritime.

Detailed explanation-3: -Marine ecosystems are the largest of Earth’s aquatic ecosystems and are distinguished by waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content.

Detailed explanation-4: -synonyms for marine/maritime abyssal. aquatic. coastal. deep-sea. hydrographic.

Detailed explanation-5: -Marine can be an adjective or a noun.