In 1974 Van Andel led the first dives in the submersible
Alvin to examine the volcanic rocks of the seafloor at the
Project FAMOUS site on the
Mid-Atlantic Ridge. In February 1977, Van Andel dived again on
Alvin with pilot Jack Donnelly and scientist
Jack Corliss, this time to the
Galapagos ridge beneath the Pacific ocean. The target location for the dive had been identified the year before by marine geologist
Kathy Crane, from deep-towed imagery, but this descent was the first crewed dive to the Pacific sea floor on
Alvin. As they descended to water depth, they began to see giant white clam shells, up to long, in heaps on the seafloor, clustered around hot springs. During the Galapagos expedition,
Alvin was equipped with a robotic arm to grab rock samples from the sea floor. Instead, it was put into service to collect shellfish. These samples then had to be bottled in vodka on ship, as the expedition had no other biological preserving medium available. Van Andel recorded his observations in a personal diary, excerpted by
Naomi Oreskes: ==
New Views on an Old Planet==