What would happen if there was a planet of pure water?
If you could somehow create a planet that was made of nothing but liquid water in the habitable zone of a star, what would it look like? Would it behave like a gas giant with a vaporous atmosphere above a liquid ocean? Would it even be able to sustain itself without being evaporated by solar wind? Would the entire planet act as a super-powerful perpetual tsunami?
Edit: This is just a thought experiment. Obviously a body like this would never form.