How do underwater volcanoes form?

Did You Know? The beautiful and scenic islands of Hawaii in the United States were formed due to heavy underwater volcanic activities in the Pacific Ocean. .... Volcanic eruptions that occur in deep seas and oceans do not differ in intensity; however, the depth at which they lie on the ocean crust is too large. read more

When the two plates collide with great force, the plate of the oceanic crust dives beneath due to subduction, and risen arcs or underwater volcanoes form on the plate of the Earth's crust. A classic example of this kind of development occurs along the western coast of South America where the oceanic crust's Nazca plate subducts and dives beneath the continental South American plate. read more

Submarine volcanoes are underwater vents or fissures in the Earth's surface from which magma can erupt. A large number of submarine volcanoes are located near areas of tectonic plate movement, known as mid-ocean ridges. read more