Sea? This planet (wanderer) is almost 8000 miles in diameter and the oceans only cover to an average depth of a couple of miles. But be generous, if they averaged 8 miles in depth that would still amount to one one thousandth of the planet's diameter. Face it. This little ball we call home is nothing but a little iron diggleberry spawned from some ancient supernova. You might be better off calling it a "Slag Heap" but, well, that would be self serving.

Slag