The specimen shown in this video is Omani abalone, Haliotis mariae.
In nature and in situations of abundant algae supply, the adult abalone tends to stay in their location, waiting for their food to of the algae to be drifted to them by water currents. However, if food turns scarce, abalone crawls over longer distances in search of food.
Abalone crawls using their muscular foot which attaches the abalone to the substratum. The crawling is slow for most of the time while during emergencies such as escaping from predators, abalone crawls at higher speed.
It may worth mentioning that abalones cannot crawl over loose surfaces that are why abalone is generally found in hard areas such as rocks or corals.