Re: The Dreaded Bull Shark
Just so you know, Bull Sharks have been documented as far inland as Indiana in the Ohio River, and Illinois in the Mississippi. They've also been observed in the Potomac River, and they are known to live in the Delaware Bay so probably make excursions up the Delaware River.
I don't know of any recent observations. I have read that in 1922 a 12 foot shark was caught in the river north of Philadelphia. No species was listed only that it was a "man eating variety". I would venture a guess that it was a bull shark.
According to reports they were observed swimming in the streets of Brisbane Australia during flooding this past winter. Not unlikely as they breed in the river there.
Though its widely debated, it is suggested to be the species responsible for the attacks in Matawan Creek NJ during the infamous summer of 1916. The attacks that summer later inspired Peter Benchley to write Jaws.