Why does the sea seem to vanish after a strong earthquake?

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Photos from Philippine Institute of Volcanology and Seismology, Department of Environment and Natural Resources Soccsksargen

The phenomenon is called coastal uplift, and it happens when the seabed rises in response to the up-and-down movement of an earthquake

Powerful earthquakes do not just cause tsunamis and landslides. They can also make the sea move back permanently and expose the seabed below.

This phenomenon is called coastal uplift, and it usually happens when the seabed rises above sea level after the up-and-down movement of an earthquake. This is according to the definition by the Philippine Institute of Volcanology and Seismology (Phivolcs).