Language of Dolphins

I watched a ted talk about a team of researchers who have spent 5 months a year for 28 years in the water researching dolphins and their behavior. They found that they do very similar thing that humans do, for example they research each other's offspring, they try to dominate one another, and they make alliances with one another. They also tried to mimic the researchers noises and invited them to play dolphin games. They also have a very complex "language" that they use to communicate with each other. Although dolphins are very intelligent animals, this shows that animals are not so different than people after all. Hopefully their research will lead to better communication with animals, and then will lead to a bette human-animal relationship in general.  Here's the video.