Because they are usually by the sea
astronauts thought the moon was flat ,so they called some areas,seas.
No, there are no seas on the moon. The dark areas that were once thought to be seas are actually large basaltic plains called maria, formed by ancient volcanic activity. The moon's surface is dry and lacks liquid water.
Dark maira of seas
That would be the oceans and seas.
They are call Maria ( Latin for "seas" ).
Large dark areas on the Moon are called "maria", Latin for "seas", because the ancients who observed the Moon with the naked eye thought that they resembled the seas that they were familiar with.
They are called so beecause thes have no cell structure
The best way is to have a company such as Ziebart spray a protective coating in thes areas.
Seas (or mares) - because they were first thought of as bodies of water.
The dark and relatively featureless lunar plains which can clearly be seen with the naked eye are called maria (singular mare), Latin for seas, since they were believed by ancient astronomers to be filled with water. These are now known to be vast solidified pools of ancient basaltic lava
They have been called the Cavalry of the Seas.
Maria, or "seas", which is what "maria" means.