If there is an earthquake under an ocean, tsunami is possible.
the answer is an earthquake because the plates move so suddenly it makes the earth shake so therefore it would be called an earthquake!
If its a large earthquake, you can expect a tsunami to follow
A seaquake is a type of earthquake that occurs under the seafloor.
Tsunamis occur after an earthquake. Earthquakes that occur in the middle of the ocean can force a tsunami to make landfall.
tsunami
If an earthquake occurs under the ocean, it can trigger a tsunami by displacing a large volume of water. Tsunamis are fast-moving waves that can travel great distances across the ocean and cause devastating damage when they reach the coastline. Additionally, submarine earthquakes can also pose a risk to undersea infrastructure such as cables and pipelines.
shakes
a BIG earthquake
tsunami
tsunami
An earthquake caused an undersea landslide. it also can form by an under water earthquake
Most earthquakes are under land. An earthquake is caused by tectonic plates shifting and/or colliding together.