Henri Rotschi (left) holds a basket used to collect pearl shells as researcher Willard Bascom and Paniora examine the weight line, 1952
Location in Tonga unknown

The Scripps Institution of Oceanography at the University of California, San Diego, is one of the oldest and largest centers for ocean and earth science research in the world. As part of its Capricorn Expedition, scientists studied the Tonga Trench, the second deepest place in the ocean, and measured heat flow on the East Pacific Rise.

Scripps Institution of Oceanography Photograph Collection, bb8465282s