In 1963 the International Union for the Conservation of Nature and Natural Resources (IUCN) launched a project to conserve and manage wetlands, the MAR Project, which drew up a list of wetlands of international importance as a foundation for an international convention on wetlands.
I 1963 lancerede International Union for the Conservation of Nature and Natural Resources (IUCN) et projekt til at bevare og forvalte vådområder, MAR Project, der udarbejdede en liste over vådområder af international betydning som et fundament for en international konvention om vådområder.