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.
Every year as December 7 approaches we hear and read that eight battleships were sunk at Pearl Harbor. That is even repeated in a 2001 article by HNN staff on the HNN website debunking movie myths about Pearl Harbor. It didnât happen.