Cuttlefish. I love cuttlefish. This is a Giant Australian Cuttlefish. And there he is, his droopy little eyes up here. But they can do pretty amazing things, too. Here we're going to see one backing into a crevice, and watch his tentacles -- he just pulls them in, makes them look just like algae. Disappears right into the background. Positively amazing. Here's two males fighting. Once again, they're smart enough, these cephalopods; they know not to hurt each other. But look at the patterns that they can do with their skin. That's an amazing thing.