Measures pertaining to the fish inside the port at the Fukushima Daiichi Nuclear Power Station (planned commencement of construction for main installation work for the net to prevent the fish from leaving at the East sea wall, etc.) Measures pertaining to the fish inside the port at the Fukushima Daiichi Nuclear Power Station (planned commencement of construction for main installation work for the net to prevent the fish from leaving at the East sea wall, etc.)