The agreement was signed between NOAA’s Stellwagen Bank National Marine Sanctuary, off the coast of Massachusetts, and the Yarari Marine Mammal and Shark Sanctuary of the Caribbean Netherlands in the Dutch Lesser Antilles and it is focuses on joint whale research, monitoring, education and conservation.

“We welcome this agreement. It will open new opportunities for collaboration in activities of mutual interest on humpback whales and other marine mammals, as appropriate, as well as their respective habitats” said Monica Borobia-Hill, UNEP program officer.

As NOAA explains, Yarari sanctuary is a breeding and calving ground for the humpback whale population of around 1,000 whales, which are shared by both nations. The sister sanctuary concept is part of a plan for marine mammal protected areas worldwide and is partially supported by the United Nations Environment Programme.

The nearly 9,000-square-mile Yarari sanctuary joins sanctuaries off Dominican Republic, French Antilles and Bermuda in the sister sanctuary network originated by NOAA in 2007. The network now encompasses 257,000 square miles in the western North Atlantic, including the 842 square miles of waters protected by NOAA’s Stellwagen Bank National Marine Sanctuary.

“The sister sanctuary network, with the Yarari sanctuary as its newest member, uniquely links both eastern and western Atlantic humpback whale populations in the Caribbean, along with conservation efforts in Europe, the Caribbean and the United States,” said Paul Hoetjes, policy coordinator for Caribbean Netherlands Ministry of Economic Affairs.