Mar (sea)
Mar
Latin mare: sea.
Kochi has a busy port and a long maritime history.
Marine
To do with the sea and what lives in it.
Meera wants to study marine life near the Andaman Islands.
Submarine
A vessel that travels under the sea.
A research submarine explored the deep ocean floor.
Remember: Mar = sea: maritime, marina, submarine (under the sea). Caution: marry, market and march are not from mare.