The sea is made of water therefore all water in it is below sea level.
Ground level is the surface of the dry ground.
Your question therfore makes no sense.
Ground watera suppply of water that lies benth the suface is
The country that lies below sea level is the Netherlands. Around a quarter of the country's land is below sea level, with much of it being reclaimed from the sea through a system of dikes and pumps.
The footing lies on the ground around the base of the structure. The Foundation cn go way below with pilings deep into the ground.I can say that the footing is the part of foundation which transfers the load directly to the soil and foundationis the part of structure below the plinth level including the footing while footing is the part which is below the ground level.
the water that lays under the ground is called ground water.
The wreck of Titanic lies about 12,600 feet below sea level.
About 25%
All of the Netherlands lies below sea-level
Death Valley
about 90%.
death valley
Closest to the surface of the earth at Sea level or any portion of land that lies below Sea level.
Ground watera suppply of water that lies benth the suface is