My reason why living in a submarine is better then a spaceship

I think living in a submarine is easier than living in a spaceship because there is lots of different fishes you can see there. the ocean has  lots of water, you can use like those viral straws that you can turn dirty or salt water into fresh water and there is lots of food in the ocean like fish.  The ocean also has jelly fish and bioluminiscence water that glows at night like imagine sleeping well watching the faint beautiful glow of jellyfish and the deep blue sea. T hat’s my reason why living in a submarine is easier than living in a spaceship.