Best theory I've seen- the size of the earth (and all the planets and stars) expands over time, with ocean or magma bubbling up to form new land. See Neal Adams video. Earth millions of years ago was smaller; and years from now will be larger.
https://www.youtube.com/watch?v=3HDb9Ijynfo
The loose water may shift around but there really are "fountains of the deep" that aren't, thankfully.
https://www.newscientist.com/article/dn25723-massive-ocean-discovered-towards-earths-core/#:~:text=A%20reservoir%20of%20water%20three%20times%20the%20volume,hot%20rock%20between%20Earth%E2%80%99s%20surface%20and%20its%20core.
Correct. And this water is leaking up into our oceans. https://futurism.com/leak-bottom-ocean
Best theory I've seen- the size of the earth (and all the planets and stars) expands over time, with ocean or magma bubbling up to form new land. See Neal Adams video. Earth millions of years ago was smaller; and years from now will be larger. https://www.youtube.com/watch?v=3HDb9Ijynfo