Cormorants:

I'm convinced the flounder problem down the shore is largely due to the explosion of cormorants in the inland waterways. You can go down in the spring and watch these birds come up with one flounder after another and not just small fish. Years ago you would see thousands of baby flounder in the marinas during the summer after the flounder dropped their eggs in the spring, the bottom was lined with them. You don't see them anymore even though the fishery is basically closed and fish are still spawning. I believe cormorants are gorging on the young before they have a chance to leave the river. One cormorant probably eats hundreds of small flounder a day multiplied by how may cormorants are down there. It's an epidemic.