Swimming Pool Vacuum
Pretty much everyone is familiar with what a vacuum is - anything that sucks up dirt off your floor. In terms of a pool, a vacuum is pretty much the same thing, only it can go underwater.
Most pool vacuums are operated manually. They have a pivoting head that sucks up the dirt and move along on wheels. They are also attached to a long stick so you can push the vacuum into each corner of your pool. Many vacuums are powered by inserting them into your pool skimmer.
The best pool vacuums have a triangular head. These can get into the corners of your pool easily, sucking up all that dirt and gunk.