Your Code Name is Jonah, by Edward Packard

Second paragraph of third section (actually page 6):

“Whalesongs are probably no different from birdsongs, except they are longer,” Rueff says. “After all, whales have much bigger lungs.”

A standard choose-your-own-adventure book; there are moments where you can make a good choice or a bad choice, and moments where the capriciousness of the author pushes you down one track rather than another. Not sure why I picked it up, but you can get it here.

This was the most popular book in my unread pile that I acquired in 2013. Next on that list is Missile Gap, by Charles Stross.