The key is that both feet are in the air at the same time. By comparison, one foot is always in contact with the ground when you walk. Running is less efficient than walking, as mentioned earlier, precisely because you must propel your body weight through the air. Jogging vs. Running. The movement is similar; running is just faster.
The Basking Shark is one of a few species that lives in temperate latitudes, both north and south of the equator, but not between these two zones in the tropics.
Bull sharks have been found up the Mississippi River as far north as Illinois, and one was found 2,500 miles up the Amazon. Lake Nicaragua is full of bull sharks, known locally as Nicaragua sharks. The Zambezi River in Africa is home to many bull sharks, which are called Zambezi sharks there. After Hurricane Katrina, large numbers of bull sharks were reportedly seen swimming in Lake Pontchartrain. Bull shark moms tend to give birth in coastal lagoons, river mouths, and other estuaries.