yes
no
1916 happened In a lake with a great white
There have been three shark attacks recorded in Delaware since 1690.
Yes
1916
No
Not unless it happened in an aquarium. Pennsylvania hasn't got ocean access.
Yes
has there ever been...go back to school
Yes.
Yes, there has been a shark attack off Portugal. Of 4,555 entries in its Incident Log, the Global Shark Attack File lists only one shark attack for mainland Portugal. It's Entry 1195. It's undated. The only information is it's occurrence off Sines in the District of Setúbal in southwest Portugal. Two small row boats were fishing for mackerel. No details are given. There's just the comment "No injuries."