Yes it is an amazing "organism", although I think I should say "super-organism" as they have differentiated individuals that have different morphology and play different roles in the colony. Like various specialized cells in one organism. And the colonies do look like some kind of worms with flat bottom, despite having jelly-like body.
I found them near Moscow, not very close to you=)
Wish I had some decent macro lenses + flashes because 5x is too much. I tried an inverted 16mm lens attached with duct tape, but without flash and a background it was pointless, although those who are still unsure how the colonies look like can get an impression:
