Other examples include: 1  Some mating dances, commonly carried out by birds, are examples of fixed action patterns. 2  In these cases, the sign stimulus is typically the presence of the opposite sex. 3  Kelp gull chicks are stimulated by a red spot on the mother's beak to peck at the spot, which induces regurgitation.
Norwegian's 13-ship fleet sails all over the world, with 2015 itineraries lasting anywhere from one to 45 days. The cruise line's most popular routes include Hawaii, Alaska and the Caribbean, with home ports in U.S. cities like Honolulu, Los Angeles, Miami, New York and Seattle.
Updated March 30, 2017. The Navy has a large variety of ships in the fleet. The most well-known types are the aircraft carriers, submarines and destroyers. The Navy operates world-wide from many bases. The large ships -- aircraft carrier groups, submarines and destroyers -- travel around the world. Smaller ships such as the Littoral Combat Ship are based near their place of operations.