Surface aquarium plants are particularly useful: They leach nitrates (fish waste) directly from the water column via their beautiful trailing root systems, and they provide a sense of safety and shelter for your fish. But beware placing them in aquariums with a H.O.B. filter, as the strong downward current created by the water flow will continually drag surface plants down, damaging their roots and eventually killing them.
This dress was created by Jean Louis Sabaji. This links closely to my idea of water transformation through in is smooth across her body but comes crashing down at the bottom which looks like a waterfall.