I know the stuff was sent to Maddy by someone named Mr. Zipp. And there has been a lot of Dr. Seuss books and fish references brought into the ARG.
I just wanted to mention, that there is a small poem by Dr. Seuss called "Eat at Skipper Zipp's". (It's in one of my daughter's story collections.)
Considering that Mr. Zipp wants her to help his child, and that he's a "Skipper" I would assume that this is surely Jonas' dad!
ETA:
