marine(adj) a soldier who serves both on shipboard and on land
marine(adj) of or relating to the sea
"marine explorations" nautical, maritime, marine(adj) relating to or involving ships or shipping or navigation or seamen
"nautical charts"; "maritime law"; "marine insurance" marine(adj) of or relating to military personnel who serve both on land and at sea (specifically the U.S. Marine Corps)
"marine barracks" marine(adj) relating to or characteristic of or occurring on or in the sea
marine(adj) native to or inhabiting the sea
"marine plants and animals such as seaweed and whales".