What if water isn’t liquid on other planets, but we just can’t see it?

Think about it, when you look at the sea on earth, it looks blue, but that’s just because we can see the light bending through the water, but the water itself is invisible. The color blue just happens to be the light that water bends the most, so that’s why it looks blue. It’s probably a coincidence that water looks invisible in the visible light spectrum, but it’s probably not.