Instinctive behavior occurs when an animal has a particular internal state while it is in the presence of a specific external stimulation called a releaser or a sign stimulus.
How many ships did the U-boats sink? During the war the U-boats sank about 2,779 ships for a total of 14.1 million tons GRT. This figure is roughly 70% of all allied shipping losses in all theatres of the war and to all hostile action. The most successful year was 1942 when over 6 million tons of shipping were sunk in the Atlantic.
On December 7, 1941, the Japanese launched an attack on the US Naval Fleet stationed at Pearl Harbor, in Hawaii. A list of the ships sunk during the attack include: U.S.S. Ar â¦ izona U.S.S. Oklahoma U.S.S.California (floated and rebuilt by January 1944) U.S.S.he only two ships still around that were sunk at Pearl Harbor are both still in the water there. The USS Arizona is straddled by the Memorial structure built 50 years ago, an â¦ d you can stand on the Memorial and look down and see part of the ship below.