Mariners, also known as sailors or seafarers, are individuals who work on ships or other watercraft. Their responsibilities vary greatly depending on their role and the type of vessel, but often include navigation, maintenance, cargo handling, and ensuring the safety of the ship and its crew. Mariners can work in a wide range of industries, from commercial shipping and fishing to passenger transport and naval operations, and their skills are essential for global trade and transportation. They often spend extended periods at sea, facing challenging weather conditions and demanding work schedules.