Sea level rises and falls, so a datum line was put by the British Ordnance Survey on a harbour wall at Newlyn, Cornwall. It is from this datum line that mean sea level is measured.
Elevation, altitude, height above sea level.
i think it would be a no because sea level is the lowest level object
Elevation or altitude measures the distance of something above sea level. It is a vertical measurement typically used in geography, aviation, and hiking to describe the height of a point or object in relation to sea level.
Altitude describes an object's position relative to sea level. An object in a position higher than sea level would have a positive altitude, sea level would have an altitude of zero, and any object below sea level would have a negative altitude.
110 metres above sea level
at sea level
The word to describe the height above sea level of a geographic point is "elevation."
It is 544 feet above sea level.
It is 781 feet above sea level.
Elevation above sea level refers to the height of a location or object above the average level of the sea's surface. It is typically measured in feet or meters and is used to describe the vertical distance between a point on Earth's surface and sea level. Areas at higher elevations generally have cooler temperatures and different climate conditions compared to low-lying areas.
Part of it is at sea level. The highest point is 18.04 ft above sea level.
500 ft above sea level