330-PSA-110-63 (USN 711302): Debris on the ocean floor 8,400 feet below the surface may be a clue to the final resting place of the nuclear submarine USS Thresher.  Taken last week by an underwater camera system operated by the oceanographic research vessel, Atlantis II, these photographs show scattered bits of unidentified debris.  The round objects are sea urchins which may range in size from four to twelve inches in diameter.  The U.S. Navy states that the photographs in themselves are not conclusive evidence of the location of the missing submarine, which sank on April 10, 1963, 220 miles east of Cape Cod.  Ships of the searching force are continuing a minute search of the area with underwater cameras, sonar and other detection devices.  Photograph released May 22, 1963.  (2015/10/20).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/22171571340/">330-PSA-110-63 (USN 711302)</a>