While camping at Kerr Lake in western Virginia (9/20/2009) we found this pod attached to a root at the water's edge. I have no idea what this could be. I have tried to research this but have been unable to find anything like it. It did not appear to have any eggs inside and was quite solid - not filled with water - but more like a solid jelly. The patterns shown in the photo were on the bottom when in was in the water. If anyone can identify this I would appreciate it.