Adjective
1. of or relating to the sea;
"marine explorations"2. relating to or involving ships or shipping or navigation or seamen;
"nautical charts""maritime law""marine insurance"3. of or relating to military personnel who serve both on land and at sea (specifically the U.S. Marine Corps);
"marine barracks"4. native to or inhabiting the sea;
"marine plants and animals such as seaweed and whales"