Threat to wildlife Nairn Habour?

Local man Joe Telfer is concerned that pollution levels in Nairn Harbour may be high enough to kill wildlife especially the newly hatched cygnets. The pictures he has forwarded to the Gurn certainly seem to be extremly worrying. Joe has contacted the authorities and is urging quick action. Joe told the Gurn that, yesterday, a local boat owner used his vessel to block the harbour mouth to prevent the swans and their young entering the polluted water.