1. Of, relating to, or characteristic of the sea: After completing high school, Albert wanted to study marine biology at the local college because he was very interested in ocean life.
2. Concerning something native to, inhabiting, or formed by the sea: Some marine animals could be seen at the zoo in Tim's city.
3. Pertaining to naval matters or to shipping: The captain of the cargo ship had to recheck the marine insurance plan before starting the long voyage.

There were several marine accidents that were reported to have taken place in the harbor that year. 4. A reference to organisms in the sea or ocean: Jack found many marine or aquatic plants for his collection which he needed for his biology class.
5. Concerning artistry illustrating ocean scenes: Many marine artists came every year to the picturesque harbor in Nova Scotia to paint the seaside.