I take it the endings show the structure of the in-game universe. The first one zooms in on a single pixel revealing all sorts of structures the further it travels much in the similarity of atoms and molecules. The second instead zooms out revealing millions of "colorcubes" which create a static picture, which is interupted by the TV being "turned of", implying that the whole game takes place inside a fraction of your television screen.
We hear song in the sea! We hear our kind in the sea!
Never have we heard songs in the sea!