Greenpeace activists use granite rocks to protect the marine reserve Adlergrund from destruction by the bottom trawls of industrial fishermen. Fishermen plough through the seabed quite legally even in explicitly protected areas, thus destroying the ecosystem. The "Beluga-II" is travelling to the protected areas of the North- and the Baltic Sea in July and August 2020. Its mission is to fight for "real protected areas" - domestically as well as internationally.