mare, mari-, mar- +

(Latin: sea; ocean)

Scientiae cedit mare (Latin phrase)
The sea yields to knowledge.

Motto of U.S. Coast Guard Academy, New London, Connecticut, USA.

submarine (adjective) (not comparable)
Relating to something underwater; especially undersea: In the book Grace was reading, the pirates used a submarine cave to hide their loot!
submarine (s) (noun), submarines (pl)
1. A submersible vessel that operates underwater: A submarine is a navel U-boat that is usually armed with explosive devices or torpedoes.
2. A long marrow sandwich made of a crusty roll and cut lengthwise: Jane loved to eat submarines filled iwht meats, tomatoes, onions, and cheese.
3. In baseball, a pitch that is thrown with an underhand motion: Chuck was known for his submarines in playing baseball and was able to trick his opponents.
submarine (verb), submarines; submarined; submarining
1. To serve or operate on a U-boat: When Jack was in the navy he submarined with others in the sub off the coast.
2. To attack, particularly to torpedo, with a U-boat: In the history book Jack was reading, the Germans submarined the Allies in the Second World War.
3. To deliver a ball using a low sidearm or underhand motion: Jim tried to submarine his pitch, but he was too nervous and bundled up his throw.
4. To move forward or even under in a sliding movement: When the car accident happened, little Susi submarined under the front seat because her safety belt broke.
submariner (s) (noun), submariners (pl)
1. A member of the crew of a submersible watercraft: Tom, the submariner, worked as a sailor with others on the U-boat of his country.
2. A pitcher in baseball who throws with an underhand movement: Russel was the favorite submariner who always confused the batter of the opposing team by hurling the ball in an unconventional or deceptive manner.
supramarine (adjective) (uncountable)
In geology, taking place or operating above the sea: Jane was interested in finding out more about natural supramarine occurrences that took place above the ocean level in the past.
transmarine (adjective), more transmarine, most transmarine
1. Regarding something that is across or beyond the sea: Lynn was able to correspond with her daughter using transmarine techniques.
2. Concerning something crossing the ocean: The extreme weather conditions seemed to be transmarine, coming from the west, and would arrive in Europe the following day.
ultra mare (adverb) (not comparable)
On the other side, beyond the sea: June found out in her dictionary that plants ultra mare were those that thrived on the far side of an ocean.
ultramarine (adjective), more ultramarine, most ultramarine
1. Descriptive of a brilliant deep blue color: Susan decided to wear her ultramarine dress and shoes to the neighbors dinner invitation.
2. A reference to a place beyond the sea: Virginia's daughter was far away in a ultramarine location and about 7 hours away by plane.
ultramarine (noun), ultramarines (pl)
1. A brilliant blue pigment: An ultramarine can be extracted from a mineral deposit or it can be produced synthetically.
2. A bright and vivid pure dark blue or somewhere between red and blue: Many of the artist's paintings included ultramarines and yellows and were very spectacular.

Inter-related cross references, directly or indirectly, involving the "sea" and the "ocean" bodies of water: abysso- (bottomless); Atlantic; batho-, bathy- (depth); bentho- (deep, depth); halio-, halo- (salt or "the sea"); necto-, nekto- (swimming); oceano-; pelago- (sea, ocean); plankto- (drifting); thalasso- (sea, ocean).