What do the big ones look like? Are they fully rounded or flattened. I am asking because I had one large one in July, using humaworm, pumpkin seeds and castor oil. I would never have seen it except I used a stick (from the yard). It was about 9 inches long and a cm wide. It was gray and whitish and looked like old wet newspaper. I poked it and the skin was tough. I couldn't poke a hole in it, but I didn't try that hard. It was forked at one end. But I read somewhere that they can shed their skins? Roundworms (earthworms) in the yard have a rather tough skin too, but I have never read that they shed. On another subject, has anyone ever read about sea nettles? Here on the Chesapeake Bay, we get lots of them in August. I only read in one place how they grow. The article said they grow up from the bottom of the bay in a stalk, and pieces break off and float up to the surface, grow tentacles and float around as jellyfish. Doesn't that breaking off part sound like a tapeworm? Wonder if they are related. I saw a you tube video of a living Tapeworm and it looked like white gelly.