The term SEA-RELATED can be broken down into two crossword solutions: OCEANIC (7 letters) and MARINE (6 letters). OCEANIC refers to anything related to the ocean, such as its geography, inhabitants, or activities. MARINE, on the other hand, is a term used to describe anything related to the sea, such as its environment, creatures, or resources. Both terms are often used interchangeably, but they have slightly different meanings.