Snagged this guy in the Port Royal Sound off the coast of Hilton Head Island, South Carolina last week. At first I thought it might be a bull shark but the dorsal profile doesn't really seem to match. The captain on the boat estimated it to be about 6 feet in length and weight 250 pounds. It broke off the leader just as we got it to side so I do not have any better pictures than this one.
To me the key characteristics are the large round dorsal fin, the broad round pectoral fins, light gray/sandy color.
Any thoughts on what species this may be?