Mysterious blob or sac?

[aruotoloj]

I found this behind my rock structure this afternoon. No idea where it came from or what it is. Thank you in advance for any and all help


https://imgur.com/gallery/hej9gAn

 

[James M]

What the..... @KJ

 

[KJ]

It's hard to tell from the video.

 

[cristata.reef]

Think you can pull it for the tank and get a better pic/vid? I'm curious to find out what it is

 

[reef lover]

Got a longer video ??

 

[Dennco2000]

Turkey baster - suck it out...

 

[aruotoloj]

Well it fell apart the second it was siphoned, I got a bunch of pieces out though. Didn't seem like there was anything inside, now I just hope it wasn't toxic.