I am no expert, but it looks to me like a ball of baitfish right in the middle and it would be a safe bet that those are fish hanging around right below them. It looks like there are stumps or some other struture making contact with the bottom and the fish are gathering in that structure below the baitfish. Not for sure but to me the one I circled and labeled as a fish is shaped very fish like. Like I said, I am no expert but thats what I see.
Chris

Name: dipic.jpg Views: 738 Size: 130.3 KB