Dawn Wright becomes first Black person to reach the deepest known spot on Earth

In the waters of the Western Pacific, a sea of blue surrounded oceanographer Dawn Wright, who was a little blue herself. Her mother died last December and would not be there to watch Wright take on the challenge of reaching the deepest place on Earth. 

"She wanted to be able to live to see this, but she is watching from heaven," Wright told "CBS Sunday Morning" correspondent Lee Cowan.

Wright, a specialist in marine geology and geography at the Environmental Systems Research Institute, is the first person of any gender of African descent to go to Challenger Deep — the deepest-known point of the seabed of Earth.