Greenpeace builds an underwater ‘stone wall’ to stop destructive bottom trawling and to protect a Marine Reserve off the island of Sylt (Sylt Outer Reef ca. 5000 square kilometres). Activists drop stones marked with "SOS North Sea", from the ship Beluga II, onto the North Sea bed to protect marine life from beam trawling and gravel extraction. The North Sea has been seriously damaged by many years of intensive fishing. 08/02/2011
© Daniel Mueller / Greenpeace