A marathon.
A game that is related to the sea and starts with T is Tug a War.
Muffdiving
A marathon.
apples to apples
Turtle
Something that belongs to a teenager that starts with M and sea related is: Moter Boat and Muffdiving equipment.
tocos is sea related
Motorboat
Some sea related common nouns are:tankertiger sharktidetortoisetraveltrenchtsunamitube wormsturquoisetunaturtle weed algae
One game played in water is Marco Polo.
Piri Reis was an explorer who sailed and charted the ports in the Mediterranean Sea.
Raise the Titanic 1980.