Propelling (VMJ2020 3of10)

I didn't have any long blocks of time so I ended up chipping away at this across three days. In a twist that no-one could have predicted, my idea of what this was going to be changed quite a lot in that time.

I really didn't want to/couldn't do anything sound-related so I decided to interpret the image as a jellyfish among some ripples instead.

The thing that initially excited me about this was the problem of representing the creature's tentacles in a way that is simple and  sort of iconic, but I wasn't able to figure anything out so this version has no tentacles. I may give it some more thought and post an update if I manage to get something.