To me this looks like a bubble containing either further smaller bubbles or something that bears a resemblance to mercury maybe. That latter perception might be influenced by the kind of lighting present in said picture though.

There's also something that looks like a claw holding the bigger bubble up which means maybe it's not a bubble at all but rather a ball of some sort, something more stable than a mere bubble. Going by this, the object could be a ball made of some kind of resin and the smaller bubbles inside it could be mere bubbles of trapped air.

In the background is what seems to be either another object like the one in the foreground or maybe it's just a reflection of that one.

I have no idea what this could be! Waiting for the big reveal I guess..