A mariner is a sailor or seafarer, someone who works on a boat or ship. This term can refer to anyone from a lobsterman on a small boat to the captain of a large cargo ship. It is somewhat old-fashioned and literary, with the word originating from the Latin marinus , meaning "of the sea"-derived from mare , meaning "the sea"

. In modern usage, "mariner" is less common than "sailor" and often sounds formal or old-fashioned. Mariners are people who spend most of their working life on ocean vessels, navigating and managing ships