Retired Navy Capt. Don Walsh, an explorer who in 1960 was part of a two-man crew that made the first voyage to the deepest part of the ocean — to the “snuff-colored ooze” at the bottom of the ...

ANCHORAGE, Alaska — Retired Navy Capt. Don Walsh, an explorer who in 1960 was part of a two-man crew that made the first voyage to the deepest part of the ocean — to the “snuff-colored ooze” at the ...

If you liked this story, share it with other people. On July 12, oceanographer and geographer Dawn Wright was sealed inside a submersible, traveling to Challenger Deep, the deepest part of the Mariana ...

Hidden beneath the Fram Strait, a passage that separates Greenland and Svalbard, Norway, lies the deepest point in the Arctic Ocean, where the seafloor plunges about 18,209 feet. And now, American ...

This story appears in the December 2020 issue of National Geographic magazine. Most of the deep sea, Earth’s largest habitat, has yet to be explored. Even after decades of probing and scanning the ...