This is not Photoshop as you might have thought at first.
Children can swim with polar bears in Canada. The Polar Bear Habitat is a water zoo in northern Ontario that allows kids experiencing an outdoor swim with these beasts since 2004. Of course, humans and bears are in two different pools that are separated by a layer of bullet proof glass that is about 9-10 cm thick. Still it is a real shock for those people who see such a scene for the first time in their life.