The Greenpeace ship Esperanza with the 9 mesocosms on the deck, bound for Ny-Alesund. The ship and its crew are working with scientists from the German marine research institute IFM-GEOMAR to investigate ocean acidification, by deploying nine large "mesocosms" ((experiment water enclosures) in Kongsfjord, near the Arctic scientific research station of Ny-Alesund.