In the Greenpeace warehouse in Amsterdam a number of wooden seahorses are made. These wooden statues will be submerged on the Cleaver Bank, in the middle of the North Sea to guard the nature reserve, which Greenpeace declares a marine reserve. The statues protect the vulnerable life on the seabed against destructive bottom trawling. According to the organisation the Cleaver Bank has the highest biodiversity in the Dutch North Sea and has been seriously damaged by many years of intensive fishing.