Talking with National Geographic about how pirates talked

It's Talk Like A Pirate Day again, and everyone is coming up with their best effort at "arrrr" puns. (Today's leader: Where do pirates like to go on vacation? Arrrrrrgentina!)

But how did pirates really talk? And did some of them really say "Arrr"?

National Geographic interviewed me on the topic this morning, on account of my having written The Republic of Pirates. Their piece is now up on their site for those who arrrrrr interested.