Sunday, September 24, 2023
OceanThe Biggest U.S. National Park (Which Just Happens To Be Underwater) Is...

The Biggest U.S. National Park (Which Just Happens To Be Underwater) Is Getting Even Bigger


The Papahanaumokuakea Marine National Monument off the coast of Hawaii is getting a heckuva lot bigger.

On August 26, 2016, U.S. President Barack Obama expanded the underwater marine national park, making it four times as big and creating the world’s largest marine protected area.

The new park will be expanded by 442,781 square miles/1,146,798 square kilometers, bringing the total protected area of the expanded monument to 582,578 square miles/1,508,870 square kilometers.

So if you’re a freediver or scuba diver, the new expansion permanently protects pristine coral reefs in the waters off the Northwest Hawaiian Islands. The area is also a waypoint for 24 different whale and dolphin species, along with green, hawksbill, leatherback, loggerhead, and olive ridley turtles.

To get an idea of how big this new park will be, check out the National Geographic video below. If you want to read the full presidential proclamation, go to

New Protected Ocean Area Is Bigger Than All U.S. National Parks Combined | National Geographic

John Liang
John Liang
John Liang is the News Editor at He first got the diving bug while in High School in Cairo, Egypt, where he earned his PADI Open Water Diver certification in the Red Sea off the Sinai Peninsula. Since then, John has dived in a volcanic lake in Guatemala, among white-tipped sharks off the Pacific Coast of Costa Rica, and other places including a pool in Las Vegas helping to break the world record for the largest underwater press conference.