I was in the water last night cleaning out floating weeds in the vicinity of the diffusers. I noticed some solid gelatinous balls sitting on the bottom. I moved one of them into shallow water to have a look at it. It was about 8 inches in diameter and is covered with 3/8 inch diameter "eyes". They are not really eyes, but I am struggling to describe this thing. This thing has considerable weight. It does not seem to have the ability to move.There were many more on the lake bottom and most were much larger. Anyone know what it is? Is it animal or vegetable?