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 Battle of Leyte gulf is also considered as the largest naval battle in history in terms of tonnage of ships sunk. The Allied forces lost 1 light carrier (USS Princeton, the largest American ship sunk during the battle), 2 escort carriers, 2 destroyers and 1 destroyer escort â a total of 37,000 tons of shipping.