In response to the floating rock, accept any of these explanations:
1: Some rocks do float, the ones with holes in them.
2: Considering the rest of the movie, a floating rock shouldn't seem too farfetched.
3: It is not a rock, but instead a delicious fish.
4: The rock is hollow.
5: I wasn't thinking straight when I was making this, my mind is dead from final exams.
I haven't had a lot of spare time lately, so this took longer than I had hoped. Anyway, enjoy.
Also, the first ESHAS is not on Newgrounds, so don't look for it.