Can be explained by the continental drift and seafloor spreading theory.
Explanation:
The relationship of the earth's crust with that of the earth ocean mass is dynamic and can be studied with the evidence that was given by the plate tectonic theory of landmass drift that clearly shows how the oceans and the earth crustal plate arranged itself to form the present known continents and the oceanic masses are the major cause of this as due to the formation of the newer and deformation of the older plates that occurs and the subducting zones of the earth.
Here you go my friend . Earth's crust is made up of rock. It is technically the first layer out 4 layers within the earth. The ocean is basically like a blanket above the crust. Our ocean's waters rest on the crust. Doesn't matter how large or how heavy the water is, our crust holds our water.
