The most surprising thing about the Galapagos, other than the fact that they're inhabited, is that they have seasons. Being as they are at sea level on the equator I figured they'd have a tropical climate year-round, but they don't. In fact, when we were there, it was shockingly cold, and the water was downright frigid. We had to wear wetsuits to go snorkeling, and even then it was often uncomfortably cold.
It was worth it, though, to see things like this:
I can't take credit for that shot, it was taken by one of my fellow passengers who had an underwater camera. But the sea lions did come out to play with us for the better part of an hour. It was an amazing experience.
Oh, something I forgot to mention last time: when a giant tortoise gets in the way of your vehicle on a one-lane road you have to just sit there and wait for it to go away. If you try to shoo it away, it will just retract into its shell.
Another fun tortoise fact: when they do retract, they have to exhale to make room inside their shells for their arms and head, and when they do it makes a loud hissing sound. It's the only sound giant tortoises make.