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.
The Sinking of HMS Hood â a summary. On 24 May 1941 two mighty ships engaged in battle â the respective pride of the German and British navies: the Bismarck and HMS Hood. It started six days before when, on the evening of Sunday 18 May 1941, the Bismarck, accompanied by the Prinz Eugene, set sail from the Polish port of Gdynia.