They are called underwater earthquakes due to the sudden release of the built-up motion releases, and the sudden movement under the seafloor causes a submarine earthquake.
What are tsunamis
A tsunami is a series of waves in a water body caused by the displacement of a large volume of water in an ocean or even a large lake
An earthquake that occurs underwater at the bottom of a body of water, especially an ocean is a submarine, undersea, or underwater earthquake.
When the rough spots can no longer hold, the sudden release of the built-up motion releases, and the sudden movement under the seafloor causes a submarine earthquake.
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