This video says about itself:
Bottom-Dwelling Sharks (HD) | JONATHAN BIRD’S BLUE WORLD
15 July 2016
When most people think of a shark, they think of an animal like the Great White or a reef shark. But there are hundreds of small, bottom-dwelling sharks like the Wobbegong that blend in to the bottom to hunt as ambush predators, the Indonesian Walking shark that walks on its fins, or sharks like Nurse sharks that simply spend most of their time resting on the bottom. Jonathan travels from Australia to Indonesia looking at interesting sharks that don’t look like sharks!