In August we reported on the joint Canadian/American expedition to the Arctic Ocean to probe the Chukchi Borderland, an underwater promontory that extends north of Barrow, Alaska, and map the farthest reaches of the continental shelf. The U.S. Coast Guard Cutter Healy and the Canadian Coast Guard vessel Louis S. St-Laurent were at sea from Aug. 7 through Sept. 16 as part of the Extended Continental Shelf Project. Upon their return, USCG Petty Officer Patrick Kelley shared his images with us (and, since the photos are part of the public domain, with you. Check them out at his flickr site.)
During the trip, scientists discovered a seamount, or underwater mountain, using a 12kHz multi-beam echosounder. The seamount is estimated to be about 1,100 meters high and is located 700 miles north of Alaska at a depth of about 3,800 meters.
What goes on beneath the ocean surface is extraordinarily compelling. Fortunately, thanks to Mr. Kelley, we can also appreciate what happened in plain sight.