Some sea related common nouns are:
A marathon.
The proper nouns: Aegean Sea, Greece, Turkey. There aren't any common nouns.
sea, water, marine life, waves
Some sea related nouns that start with A are:abaloneAdriatic SeaAlaskan king crabalbacore tunaanchovy(sea) anemoneangel fishantler coralAqua Lung ProductsArctic OceanAtlantic OceanAustralian brain coral
Aqualung, Aqua-Lung, and Aqua Lung are registered trademarks (proper nouns) for scuba diving breathing equipment.
It can be a few different things. Surf, the name of a washing powder is a proper noun. To surf, on the sea or on the internet, is a verb. It can be a common noun when referring to part of the sea that is near the coast and where people often go to surf.
Muffdiving
Turtle
Something that belongs to a teenager that starts with M and sea related is: Moter Boat and Muffdiving equipment.
Some common nouns for a person that start with D are:dancerdaughterdebutantdeep sea diverdentistdependentdieticiandog walkerdrag racerdragoondriverduke and duchess
A game that is related to the sea and starts with T is Tug a War.
tocos is sea related