The Monument is 4,900 square miles of underwater canyons carved into the continental shelf , it also has an underwater mountain 7,000 feet above the Ocean floor .
Northeast Canyons and Seamounts Marine National Monument - is a monument located 150 miles off the shore of Cape Cod .
The Monument is 4,900 square miles of underwater canyons carved into the continental shelf , monument also has an underwater mountain 7,000 feet above the Ocean floor .
Northeast Canyons and Seamounts Marine National Monument - is a monument located 150 miles off the shore of Cape Cod .