By Tom Goodenough PUBLISHED: 10:18 EST, 27 June 2012 | UPDATED: 10:19 EST, 27 June 2012. http://www.dailymail.co.uk/ Nature can often leave us marvelling with its expressive and colourful displays of beauty. But a show of pure happiness put on by wildlife is probably a little more unusual. That’s exactly what these Alaskan humpback whales were […]