Populations of smooth hammerhead and bull sharks off the East Coast of the United States have also declined by 99 percent.
From the theatlantic.com
A study led by Virginia Tech showed the great hammerhead, scalloped hammerhead and smooth hammerhead species declined by an average of 90 percent from 1981 to 2005.
From the sciencedaily.com
The National Fisheries Service this year did prohibit commercial and sport anglers who keep tuna or swordfish from also keeping great, smooth or scalloped hammerhead sharks.