The change of the sea-level occurs everywhere throughout the world, due not to a movement of the land but to an actual fall or rise of the ocean itself.
Eustatic sea-level rise is the world-wide changes in sea level caused by the addition of water from the melting of glacial ice and/or the thermal expansion of sea water due to global warming.
The graph illustrates the sea-level curve in last 210 million years, with the high levels representing marine transgressions and the low levels representing marine regressions.
Marine regression is a geological process occurring when areas of submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously exposed land.
