Saturn.....
amazing isn't it!
The planet Saturn could theoretically float on giant planet like Jupiter because Saturn has a lower density than Jupiter due to its composition being mostly gas and liquid. This would mean that Saturn would have the ability to "float" in the atmosphere of Jupiter, similar to how a boat floats on water.
There is no known planet that would be able to float in water, as planets are much larger and denser than water. However, hypothetical lightweight planets made of less dense materials like ice or certain gases could potentially float in a giant body of water if it existed on a massive scale.
Saturn is a gas planet, and if it were possible to place it in water it would float. Not sure if the rings would float, but, the planet itself would.
Saturn could float in water, because it has a density of 0.7 that of water. That is, however, a theoretical construct, because you would need an enormous pool of water, with a gravitational field much larger than anything we have, in order to achieve that state.
SATURN.
Saturn. The planet is less dense than water.
No, the density of Uranus is 1.27 g/cm3 (the density of water is 1.00 g/cm3), therefore Uranus would sink. The planet that would float in water is the planet Saturn which has a density of 0.687 g/cm3.
Saturn is that planet. It's less dense than water so would float in theory, but it's not a very practicable idea.
Theoretically, the planet Saturn would float when placed in water because it has an average density that is less than the density of water. On the other hand, there is probably not enough water in the solar system to permit the experiment to be performed. If you choose not to consider the planet as a whole, the atmosphere would float on the water but the rocky core would sink like a stone.
So light it would actually float on water.
Saturn is less dense than water. So the Answer is Saturn.
Both your weight and the water pressure would decrease, so it would be the same as on earth. Floating is nothing to do with the size of g, provided it isn't zero, or water pressure. If your density is less than that of water, you will float.