It will overheat, warp the basket and lid and adjacent Plumbing. Then damage the seal, plate and bearings. Then quit running.
If the end of the hose is running in a pool of water, yes
No running. No diving in the shallows water.
That depends on the size of the pool and how fast the water is running that is filling it.
All the water dissapears.
no, the pool must be empty
The water will just be re cycled without being cleaned, the sand removes minute particles of solids.
NO!
Then you can't swim
So long as there is water coming through the pump when it is running it doesnt matter what the water level in the pool is.
YES if you keep water running lol
The stone gets wet.
One of the best ways to prevent problems with your swimming pool is by running the pump and circulating the water. The best care for the pool varies depending on the type of pool you have but keeping proper water chemistry is important for any pool.