I've caught many seatrout covered in sea lice. I remember one in particular which weighed about 1/3lb (minimum size should be over 3/4lb but lice infestations often seem to drive the trout up the river early). I counted 62 lice on it. There was a hole in the back of his head where the lice had eaten through the mucus membrane and continued into the skin. All that was left of the dorsal and pectoral fins were the spines. Most people dont see this direct result of salmon farming because the fish simply dont make it to the river. Stop the salmon farming and we will have wild salmon and seatrout fishing here again.