They've actually been caught throughout the years as well, in the nets further up river too.
Bullsharks have the ability to shut down some gland and can trek into fresh water as well.
Or so they say...
Funny think about that guy Dean, as I understand it from a fellow fisherman and guide. He explained that he was caught and charged with poaching $70,000 worth of striped bass from the Potomac River ....one of the infamous Lacey Act nine who will face revocation of their commercial fishing priviledges before the PRFC (Potomac River Fisheries Commission) on Sept 9th.