Just for fun, I visited Martin Strel's website to learn how he is faring during his grueling Amazon River dip. To date, he's doing swimmingly (groan, people, groan), despite the "dire warning."
I don't know about you, but I'd be perfectly content simply reading about one of the Amazon's finest specimens in a homeschool unit lesson, as opposed to doing laps alongside any of these beasts. Still, Martin's da man when it comes to spectacular aquatic feats.