It's one of those impossibly stupid questions, because it takes someone impossibly smart to give an answer to someone just as impossibly smart to understand. But, hey, if you're into massaging your brain a little bit, ask yourself this: just how big is the ocean? All the oceans are one ocean.
Like did you know 71 per cent of the Earth's surface is the ocean? And that there's enough water in the ocean to put a whopping 130km or so of ocean on top of the entire United States (that's higher than clouds). And pretty much the entire world is ocean. [TED ED]