A boy watches jellyfish swim in a large tank at the Vancouver Aquarium in Vancouver, British Columbia May 16, 2013. The tank contains around 2,000 spotted jellyfish and is part of a major display of 15 various species from around the world. REUTERS/Andy Clark (CANADA - Tags: SOCIETY ANIMALS TPX IMAGES OF THE DAY) © Bild: Reuters/ANDY CLARK Aquarium 19.05.2013 Quallen-Leuchten in Vancouver In Vancouver befindet sich eines der größten Quallen-Aquarien mit rund 2000 Bewohnern. © Bild: Reuters/ANDY CLARK A boy watches jellyfish swim in a large tank at th © Bild: Reuters/ANDY CLARK A visitor takes pictures of jellyfish swimming in © Bild: Reuters/ANDY CLARK Children watch jellyfish swim in a large tank at t © Bild: Reuters/ANDY CLARK A child watches jellyfish swim in a large tank at