Conversely, the East Coast Mako population is in fairly good nick. I've encountered Makos ranging in size from "purple puppies" to freight-car sized behemoths. The most memorable was watching an 800-1000 lb Mako chomping away at a floating swordfish carcass just inshore of the continental shelf.
What's been overfished here are the Dusky, Tiger, and Bull sharks, whose populations have been decimated by "finners", that is, lowlife fisherman who catch them, hack off their fins (shark fins are in high-demand in the orient), and then drop the now helpless sharks back in the water, to die a slow death from starvation.
I've kept only mid sized (150-250 lb) Makos for the table, and tagged and released the rest. In fact I've probably tagged several hundred blue sharks over the years, as well.
some old pics (scanned to jpeg)