Not sure if anyone here has seen this yet, but I stumbled across it today and it looks like an amazing resource for figuring out basic patterns in shark migrations. If you open up all the tracked routes at once it is interesting to look and see that many of them intersect at the same points. If you go to the left side of the page you can select different species of sharks to track. Looks like it could be a valuable resource, especially if they start tracking great hammerheads!!
Nice, Ocearch also has a shark tracker of sharks they are tagging. Mostly Great Whites, but they have started to tag Bull Sharks as well. Also gives updates on position when they get close to the surface to ping the satellites.
Look at the coast of South Africa, they are all over!