In 1993, he began his doctoral studies in wildlife and fisheries sciences at Texas A&M University with Professor William Eugene Evans as his major advisor. He collaborated with the U. S. Navy Marine Mammal Program in 1995 to investigate marine mammal hearing at depth. He periodically traveled to San Diego to continue collaboration on temporary threshold shift in marine mammals, until he was employed as a Behavioral Research Programmer for Science Applications International Corporation. He collaborated with Ted W. Cranford on a study of dolphin biosonar sound production in 1999. In 2001, he was awarded the Society for Marine Mammalogy's Fred Fairfield Award for Innovation in Marine Mammal Research. He completed his Ph.D. in 2003.