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 Titanic sunk on April 14, 1912 while sailing to New York after striking an iceberg. Out of the 2,223 people on the ship during the trip, only 708 people survived. Many of the people who survived the tragedy were children, women and first and second class guests. The estimated number of deaths from the first class, second class and third class were 130, 166 and 536 respectively.