All my life I have found these things in a fresh water lake in summer in central Connecticut. We call them "jelly monsters". I've never known how to start finding out what they are. Biologists I ask seem stumped. Maybe one of you can help.
They are large globs of firm jelly, underwater, in lake shallows, attached to sticks. Up to six inches in diameter. Outside is an opaque brownish skin. Inside is absolutely clear jelly. On a few times I have cut them open I have found some of the flatworm Planaria inside.
Their jelly-like appearance makes me think they are egg-related, but inside they are clear and pure as glass with no trace of an embryo or other black dots, like in frog eggs.
Ring a bell with anyone? Thanks.

for some reason that sounds really familiar..... i have seen them(or at least something simliar) floating in the river/reservoir here in northern VA. im not sure what they are. i think i also saw them in a lake in the appalachian mountians while i was getting certified to scuba dive. i dont know what they are. they could still be some type of egg thing even if there arent any traces of embryo or anything. or maybe some of what you have seen are unfertilized and therefore no embryos are developing. my guess is fish or frog egg. i will ask my bio lab professor thursday and re-reply whatever he says, even if he has no clue.

I can think of two possibilities:

Salamander eggs where the babies have already left.

Bryozoans (moss animal colonies).

IT'S THE BLOB!! RUN FOR YOUR LIFE!!!