Arctic Ocean Arctic Ocean Hills Mega Island North America Polar Untouched WildernessAmund Ringnes Amund Ringnes, Canada Added on 10 December 2023 5,289.512 km² Canada
Atlantic Ocean Mega Island Moderately Inhabited North America North Atlantic Ocean Plateau TropicalPuerto Rico Puerto Rico, United States of America Added on 10 December 2023 8,759.471 km² United States of America
