The Earth has 15 Tectonic plates segments, of the earth’s crust. The movement of them is volcanic and seismic activity.
The Earth's crustal plates shifted and collided over long periods of time; so the landmasses on Earth were not always what they are today,
A tsunami’s great amplitude causes water to recede far in front of it.
Expanding Earth and Pangaea Theory
Three types of Plate Movement
Hidden magma layer: Scientists discover 'lubricant' for Earth's tectonic plates
“Violent Earth” Tectonic Plates Shifting More Due to Human Activity
Oil Is Earths Natural Lubrication for Tectonic Plates
Earth 100 Million Years From Now
650 Million Years in under 2 minutes
What are the different types of plate boundary
Earthquakes and Plate Tectonics
Ocean STEMulation: Tsunamis and Plate Tectonics
Occurrence of Tsunamis - worldwide
Tsunami Sumatra 2004, Andaman Indonesia
2004 Indian Ocean earthquake and tsunami
How was the Japan tsunami created?
2011 Tohoku earthquake and tsunami
TSUNAMI IN JAPAN - all videos - 20 live videos from the first week - original sound
Tsunamis: run-up and inundation