What does sea level refer to?

Sea level refers to the average level of the surface of the ocean measured along a shoreline. This measurement is essential for various reasons, including navigation, construction, and studying climate change. By establishing a baseline reference, scientists can measure changes in elevation and understand shifts in the environment, such as rising sea levels due to climate change.

This concept is critical because it serves as the starting point for calculating topographic elevations and depths in marine environments. Understanding sea level helps in assessing the impacts of ocean currents, tidal changes, and the overall health of marine ecosystems. It represents a standard that can be utilized internationally for various scientific, geological, and meteorological purposes.