A cool video has emerged of a humpback whale breaching out of the water in off the coast of Dalvik in Iceland. <br /><br />The footage, shot on September 17, shows the whale jumping metres above the surface as whale-watchers gathered for a birthday party. <br /><br />"Larus Anton, son of the whale watching captain Freyr Antonsson, was celebrating his 12th birthday with his friends on a rib boat when a humpback whale party crashed it," the filmer wrote online.