It wouldn't be hard to have a misunderstanding at all!
I saw your pics(pretty good!), and agree, there's some familiar looking stuff there ... unfortunately...
WU, Thanks for the psychedelic artwork and, saay that box looks a little psychedelic too : )
If one were to try to trigger nematocysts with electrical charge, where would you best gather them from? I mean the ones I've seen and photographed were "accidental". Are they in our environment much more than we ever knew?