[nicwolff]

The Earth is being pulled away from that water, just as the water on the right is being pulled away from the Earth.

[adammarples]

But the water on the left is being pulled by everything to the right of it, moon, earth, other water. Why is it left behind? Every single thing is being attracted by the same centre of gravity on the right of the earth

[lostmsu]

It's further away so it's pulled less, so it shifts less.