Yes, it is shibori painted hand-dyed fabric.
For those of you who might not know how to do that, here is a quick description.
Take fabric ( in this case a hand-dyed fabric but depending on what look you are going for, even commercial fabrics will work.) Tape it to a round object. I have several sizes of PVC pipe for shibori. This is done on the largest circumferencce one.
Wrap the fabric with twine. The space between the twine on the pole can vary...again according to the look you want. For the water fabric I space the twine a bit farther apart.