Delta Works was completed by the Europoortkering which required the construction of the Maeslantkering in the Nieuwe Waterweg between Maassluis and Hoek van Holland and the Hartelkering in the Hartel Canal near Spijkenisse. The works were declared finished after almost forty years in 1997. In reality the works were finished on 24 August 2010 with the official opening of the last strengthened and raised retaining wall near the city of Harlingen, Netherlands. Due to climate change and relative sea-level rise, the dikes will eventually have to be made higher and wider. This is a long term uphill battle against the sea. The
Protected areas of Canada Wildlife Area and the other a Marine Wildlife Area, could be created to protect a contiguous zone covering land and marine features extending to the limit. Provincial and territorial governments also protect areas within their boundaries. Regional governments and local governments also create parks; however, these tend to have a greater focus on recreation. Another form of conservation is made by land owners who want to preserve nature for future generations by placing a covenant on their land. Protected areas of Canada Protected areas of Canada have been created to protect ecological integrity, as well as to provide areas for