Input/Output Names Bruce S. Appelbaum and John N. Seitz to Its Board of Directors.

Energy Editors/Business Editors

HOUSTON--(BUSINESS WIRE)--Aug. 6, 2003

Input/Output Inc. (NYSE:IO) announced today that Dr. Bruce S. Appelbaum and John N. Seitz have been elected to its board of directors. With the appointment of Messrs. Appelbaum and Seitz, Input/Output now has seven directors on its board, six of whom are independent as defined by the New York Stock Exchange.

Dr. Appelbaum is chairman of Mosaic Resources Company, a newly formed exploration and production company focusing on opportunities in the North Sea. Prior to his current position, he served as vice president and president of Worldwide Exploration and New Ventures of Texaco Inc. Dr. Appelbaum joined Texaco in 1990 as division manager of Texaco U.S.A.'s offshore exploration division, was promoted through several positions of increasing responsibility and was elected an Officer of Texaco Inc. in 2000. Under his tenure at Texaco, he divested under performing assets and acquired high potential acreage that added approximately three billion barrels of oil equivalent in a four-year time frame. Last year, Dr. Appelbaum was named "A Discoverer of the 20th Century" by the American Association of Petroleum Geologists.

Dr. Appelbaum is currently a Trustee of the American Geological Institute Foundation. He also serves on the Advisory Board to the Department of Oceanography at Texas A&M University and previously served on the Advisory Board of the School of Earth Sciences at Stanford University.

Dr. Appelbaum graduated from the State University of New York at Buffalo in 1969 with an undergraduate degree in Geology. He earned a master of science in geological oceanography in 1971 and a doctorate in geological oceanography in 1974, both from Texas A&M University.

Mr. Seitz is currently a consultant to the oil & gas industry. Prior to his current position, he was president and chief executive officer of Anadarko Petroleum Corporation until March 2003. Mr. Seitz joined Anadarko in 1977 as a senior geologist and was promoted through several positions of increasing responsibility, becoming president and chief operating officer in April 1999, and chief executive officer in January 2002. Under his tenure at Anadarko, the Company grew through discoveries, development, and acquisitions to become the largest U.S. independent oil & gas company in 2002.

Mr. Seitz graduated from the University of Pittsburgh with an undergraduate degree in Geology in 1974 and earned a Master of Science in Geology from the Rensselaer Polytechnic Institute in 1975. He also attended the Advanced Management Program in 1996 at the Wharton School of Business.

"We are delighted to add Dr. Appelbaum and Mr. Seitz to our board of directors," stated James M. Lapeyre, Jr., chairman of the board of Input/Output. "We expect both to help in our strategy to enter new markets and to better educate and promote our new full-wave digital imaging systems technology, VectorSeis(R). They bring in-depth understanding of E&P technology, and how it is purchased and utilized by oil companies. They also have substantial contacts with industry executives around the world, which will help strengthen our ties with oil companies."

Input/Output Inc. is a major provider of seismic acquisition imaging technology for land, marine and transition zone exploration, production and reservoir monitoring. The Company specializes in technology that creates value for the energy industry in the areas of 2D, 3D, 4D and multicomponent seismic data. Additional information on Input/Output Inc. is available on the Internet at www.i-o.com or contact us at [e-mail].