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.
Although the Leopard Shark can be found with other smoothhound sharks it's striking pattern makes misidentification unlikely. Skittish. Best approached on snorkel but difficult to get close to. Apparently easier to approach at night. Due to their small size Leopard Sharks do not pose a threat to divers or snorkellers.