Dolphin Surfing, Woman Wakeboarding with Dolphins as seen on TV (WORLDWIDE!!)

Its pretty obvious that the dolphins approached the humans. And either way, dolphins have the option to swim away if they choose to. They didn't. If you've ever gone diving in the ocean and seen dolphins you'll notice they are very curious creatures. They are the second smartest animal on the planet (next to humans), and they are peaceful creatures. If they felt threatened in anyway they could have chosen to leave but they didn't.