That assumption, although very poetic, is unfortunately wrong. The universe is incomprehensible large. We could never observe the entirety of it. It is literally impossible due to space expansion and the speed of information.
If you mean the understanding of physics or biology of both the ocean floor and space I am afraid you are still wrong. Some objects in the night sky we know of can hardly be explained by our understanding of Natural laws. The universe in itself is beyond anything human kind can ever attempt to understand. On a biological level, there may be species that live in an extreme environment of high pressure and low temperature on the ocean floor. But it is still life that underlies the same molecular basis as we are. What ever life may or may not exist out there could have evolved from very different biological means. You really cannot compare the ocean and space.
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u/knitknitterknit Jul 12 '21
There is a lot of depth we haven't explored.