Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth 's coastal bodies of water from which heights such as elevation may be measured.

May 30, 2025 · Sea level is the base level for measuring elevation and depth on Earth. Because the ocean is one continuous body of water, its surface tends to seek the same level throughout …

Sea level, position of the air-sea interface, to which all terrestrial elevations and submarine depths are referred. The sea level constantly changes at every locality with the changes in tides, …

Jun 3, 2020 · When it comes to sea level, NASA does much more than just measure it; they also seek to understand it. But for non-scientists, fathoming the forces that determine sea levels …

Jun 16, 2025 · Sea level is often perceived as a fixed horizontal line, but it is, in reality, a complex and dynamic surface representing the average height of the ocean’s surface between high …

What is sea level rise, how is it changing, and how can coastal communities plan for the future? These questions and more are answered in this introduction to sea level rise and its impacts.

Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth 's coastal bodies of water from which heights such as elevation may be measured.

Jul 8, 2019 · What is sea level and what does sea level actually mean? Discover the meaning of sea level and how rising sea levels can impact our planet.

Sea level refers to the average height of the ocean's surface, measured along a coastline, and serves as a baseline for measuring elevation and depth on Earth. It is influenced by various …

Aug 10, 2017 · Sea level is a measure of the average height of the surface of the sea. Like land, the surface of the ocean is not flat or uniform. But unlike land – for the most part – it can …