So what kinds of apps does a dolphin use? Turns out they're addicted to Plants vs. Zombies HD, too. No, just kidding -- they use just an image that contains pictures of various items that exist around the dolphin in real life. The trainer points to an object in real life, and then asks the dolphin to point to that same object on the screen, laying the very first groundwork for lingual interaction.
Interesting stuff. We haven't heard of dolphins using Apple's magical device before, obviously, but what's constantly surprising is that the iPad is slowly replacing all sorts of other technology, and being used in many ways that Apple's engineers couldn't even imagine.