I'm not disagreeing, but how else would we be able to observe behavior like this? Approaching dolphins in the wild, at least in America, is dangerous for the dolphins and illegal. Not to mention, if we WERE lucky enough to observe a dolphin doing this, what is the chance we'd be able to get evidence? Not every scientific diver brings a camera and has it ready at the right times, it's very unlikely. We've done myriads of studies that have allowed us to realize just how intelligent they are, and that's something we'd have never known or could have tested in the wild. It's a F***ing disgrace that they're kept in poor conditions and poor health. But zoos are a chance to let the average joe observe something they likely would have never seen, and thus understand and appreciate it. It's a flawed system, but those captive animals are there to help everyone understand and appreciate their wild counterparts.
Pole dancing
Infinite bike jump
Boxer takes fake dive
Kayaker loses paddle
Trap shooter catches piece of trap
Bulldog climbs on chair and sits
Playing Rock-paper-scissors while stuck in traffic
Hawk flying between trees
Puppy scared by cat coming out of bag
Guinea pig vs. bag of popcorn