What depth could the entire planet theoretically be covered by if all identified subsurface water and ice melted?

Answer

Several meters deep

The immense volume of water detected in subsurface ice and hydrated minerals, if melted, is sufficient to potentially create a global layer of water several meters deep across the planet.

What depth could the entire planet theoretically be covered by if all identified subsurface water and ice melted?

#Videos

Just in: NASA Has Found Oceans of Liquid Water on Mars...For Real

Marsastronomywaterplanetsevidence