Crab? Kinda see the eyes. Get it a shell?
Sounds like you answered it yourself
How big is it?
Is it moving or is the flow moving it?
It kind of looks like a huge hydroid jelly.
Damn, that's a weird looking creature for sure, hope you find your answer...
Well what gets me is that close to the end of the video it stopped moving/dancing and then the second you put light on it, it moved again.
Sure can't wait to see if someone can figure out what it is, But I still want one![]()