Looks biological to me - the movement it demonstrates might be flowing with the water currents and therefore does look a little odd. The hexagonal 'scales' look very interesting, almost like a magnified layer of skin cells?

It doesn't have tentacles etc like a jellyfish, but the inside structure does look similar to one.

My guess is a species of jellyfish blown inside out by the currents exposing its bits!

I watched this and after a good close look it reminds me of placenta, maybe from a whale. The hexagonal structure makes sense to allow for expansion.
The "Organs" are more likely for the amniotic fluid and blood/oxygen to pass into it.
As for the movements, that look more like interferance from the ROV. Notice how the heads up display changes and shows only 360 degree movement? The right hand side displays depth at 5000 ish.

The last section was made to look like the organism made a nose dive when actually I think the ROV made a rapid climb.

But..........I could be very wrong.
Interesting.

It is fascinating, but I'm with the posters who suggested super cooled oil being wafted about by the camera, could be why the controller spent so much time analysing it. I don't know enough on the subject to explain the hexagon shapes, but all you need to do is look at the Giants Causeway to know nature can make these things.

Weird & mesmerizing at the same time, I couldnt stop watching whatever it is. Would also be interested in knowing the size, where. Thanks for sharing

Originally posted by DrBullcrap
Maybe a mutant from the poisons?

Absolutely no.

its a blanket monster

IMNBHO - 100% natural sea creature.

First thought was gelled (jellified) oil slick but then I saw the organic patterns of normal creatures. Second thought was an organic patterned sheet floating in the water - but - there were no ends or corners or straight edges. Third thought was a sheet of algae - but - as the movie progressed you see the creature is self-willed (can move as desired), and a blob of internal/external organs. Finally, at the end you see a feeding or sexual organ and it's pattern.

Cool video OP! Thank you for showing us stuff we don't get to see everyday. That makes a day special.

It's worth asking ourselves if the movement seen in the video is the result of the current (ie. fish guts) or intelligent decision-making (ie. squid/jellyfish/deep see versions of those two with different names).

Reminds me of those creatures you see in the coffeetable book based off the Planet Earth series.

First, I thought it was jellyfish, then an octopus, then you don't want to know , then a slinky satin sheet. This thing has me confused. Totally cool though. In a way, it also looks to be showing off for the camera. Like wth...........

Maybe this thing shoots in the sky like an orb, looks as bright enough to be able to do that.

OMG just flabbergasted and amazed.

Then at the end it makes it's itself look like Medulla oblongata??? WTF......

Looks like my magic carpet , I lost last summer above the Mediterranean sea . Its trying to get home to me ..

My only thing is that I wish there was some way to better tell scale. If we knew how large the thing was it would help narrow it down a bunch. it could be anything from 30 feet to 4 feet in size. I noticed that the depth said 5000 n something so that would make it really dark. How far do the lights penetrate? the water there. could we get some sort of specs on that? Then maybe we could make a guestimation of it's size.

To me I say swim bladder or placenta. favoring placenta or maybe even intestinal or stomach lining. One idea I had when looking at the round jelly a poster had put up a picture of (deepstar inigmatus) was could it be one of those dead and torn open to like a sheet and fluttering around.

Whatever it was looks to me like it was following the natural currents and could possibly be inanimate.