If they feel main drains are not required that brings their marketing/ sales practices into question.
Most electric pumps have a guard at the bottom to prevent leaves and such from getting into the pump. Unfortunately, you need to have usually about 1/2" to 1" of water in the pool for the pump to work. I would suggest trying to drain the remaining water with a hose.
Basalt, which is a mafic igneous extrusive rock.
They are called 'tube feet'.
I had an inground pool installed. We just turned on the lights at night and noticed footprints on the bottom. Can this be fixed? Call the pool company back. The bottom is normally sand mixed with cement. The liner will probably have to be removed and bottom smoothed. They should have checked that before installing the liner. Those printswi catch sediment and debris for the life of the liner.
suction cups that help them grab their food.=) XD
Vermiculite is not a suitable substrate.
Kind of, mice have about 5 or so suction cup like pads on the bottom of their feet, which enables them to climb easier although the sticky pads or suction cups aren't very strong,especially if they were to be holding onto something upside down.
Theoreticaly Yes
the suction cups on the bottom of their body help them get a good grip on things.
Triangular based pyramid with no bottom. That is, if you meant 3-D shapes, presumably?
lift out the skimmer basket there should be a floating diverter with a flap that closes off suction. some skimmer baskets are rotated to do the same thing. insert your hose into the other skimmer. turn off suction to the main drain if you need more suction.
You can get a by pass valve that will alleviate some of the suction by taking water into the hose at another point.