Water lilies float on the top of the water; their roots are set in the soil at the bottom of a lake or pond.
Many folks plant the roots in pots set on the bottom of a pond. Monet, in his extensive and beautiful water gardens, was one of these.
The largest water lily comes from the Amazon Basin; this fact is reflected in its binomial: Victoria amazonica. This giant water lily can support the weight of a human.
The white flowers of the giant water lily bloom only at night.
The rhizomes of water lilies are a favorite food of muskrats. One can often find muskrat lodges near by where you see water lilies.