Dutch artist Florentijn Hofman has supplied the port of Hong Kong with two large rubber ducks. With the installation, he hopes that the viewer will feel "double happiness" This is not the first time that floating works of art have taken over the city.

Ten years ago, you could glimpse something similar, but it was only a duck then. Cities other than Hong Kong have also been visited by the site as the installation has found its way around the world since 2007.Watch the duck art in the clip.