Type A midget submarines. (It's a funny name but that's what they're called.)
Japanese-Americans.
pearl harbor what kind of question is that
The attack on Pearl Harbor mainly used aircraft bombs and torpedoes, not guns.
Pearl Harbor was bombed by Japenese "zero's" airplanes. The Zero was built by Mitsubishi and had the designation of A6M.
zeros
Absent the primary targets, the carriers; the secondary targets hit were the battleships. Targets of opportunity were anything else; cruisers, destroyers, support vessels.
6 aircraft carriers
Atomic
During a time when the U.S. and Japan were supposed to be having peace talks, Japanese airplanes attacked the U.S. ships that were at anchor in Pearl Harbor. The Japanese wanted to control all of the Pacific, so they told their people that citizens of the United States were too genetically impure to be able to endure the kind of war that Japan would bring.
Mail, Radio, and Hardline Telephones
Shrapel, burns, and bullets from the strafing Japanese airplanes.
Some historians believe that some of the armor piercing bombs dropped by the VAL dive bombers may have been converted Japanese battleship "armor piercing" 16 inch shells. Otherwise, bombs dropped were conventional armor piercing and general purpose high explosive (HE), and then the real destroyers...the torpedos.