Bachelor of Science in Geology, Physics, & Chemistry, Sri Venkateswara University, Tirupathi, 1978. Master of Science in Applied Geology, Indian School Mines, Dhanbad, 1981. Master of Science, London School of Economics, England, 1990.
Doctor of Philosophy in Applied Geology, Indian School Mines, Dhanbad, 1993.
Geologist trainee Coal India Ltd., Dhanbad, India, 1981—1982. Scientist trainee National Institute Oceanography, India, 1982—1983, scientist 'b', 1983—1988, scientist 'c', 1988—1993, scientist 'e-i', 1993—1997. Principal scientific officer Antarctic Study Center, 1997—2001.
Group director, scientist 'f' National Center Antarctic and Ocean Research, 2001—2007, scientist 'g', since 2007. Technology member Prepcom United Nations Law of Sea, New York City, 1987. Member research advisory council National Ship Design Research Center, Visakhapatnam, since 2006.
Expert member legal & technical commission International Seabed Authority, Kingston, Jamaica, since 2007. Member Technology and Standing Committees, Government India. Program manager Ocean Research Vessel Sagar Kanya.
Secretary NIO Employees Cooperative Credit Society, Goa, 1994—1997, Andhra Sagham Goa, Panaji, 1991—1993. Fellow: Indian Geological Congress (life), Indian Geophysical Union (life), Geological Society India (life).
Married Alison W. Luis, February 10, 1988. Children: Shashank, Aaslesha.