Spahr Webb is an oceanographer masquerading as a seismologist. He has been building devices to throw in the ocean since his graduate student days, and sometimes they even come back. His major interest these days is seismology and the structure of the uppermost mantle and crust under the oceans. He has also worked in marine electromagnetics, magetics, gravity, and his group developed the compliance technique for determining crustal shear velocity structure under the oceans. He has been a PI on most of the major ocean bottom seismometer experiments (OBS) including MELT, GLIMPSE and LABATTs (in Lau basin). He has been the Langseth-PGI Senior Scientist at the Lamont Doherty Earth Observatory of Columbia University and an adjunct Professor in the Department of Earth and Environmental science since leaving the Scripps Institution of Oceanography in 2000. He received his PhD from SIO in 1984 and worked two years as a postdoctoral fellow at WHOI.