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.
47 Ships Sunk by Kamikaze Aircraft. by Bill Gordon. Sources differ regarding the number of ships sunk by kamikaze aircraft during World War II. Inoguchi (1958, 211-34) lists the names of 34 ships sunk by kamikaze attacks, and Warner (1982, 323-34) gives the names of 57 ships sunk by special attack aircraft. However, an examination of other historical records indicates that both of these two lists do not have the correct number of ships sunk by kamikaze.
The mystery is why we allowed it to happen. The Golden Gate Bridge, with its mythic beauty, easy access, and promise of near-certain death, kills an average of 30 lost souls every year, making it among the most popular suicide sites on Earth. Unattached, middle-aged white men are the most frequent victims.