An hour before the Japanese air attack on Pearl Harbor, crew members of the USS Ward spotted and opened fire on one of the Japanese midget submarines attempting to infiltrate Pearl Harbor. The report of the Japanese sub was ignored and following the attack, the official story was that the Ward had "probably" sighted and shot a whale. The claimed sub was officially listed as unconfirmed until 2002 when oceanographers from the University of Hawaii succeeded in locating and photographing the remains of the submarine. This vindicates the crew of the USS Ward and underscores the fact that warnings were being blocked to make the attack look like a surprise.
Of the five Japanese Midget Submarines deployed in the attack, only four are accounted for.
The fifth submarine may have actually succeeded in its mission to infiltrate pearl harbor. Careful study of this photograph taken by the attacking Japanese shows several torpedo trails in the water, and at the head of one of them, what appears to be a conning tower poking out of the water.
happy pearl harbor cover up day