2009-10 (Freshman):
Dunnigan began his season with a sixth place finish in the 1000 Free with a time of 10:20.55 against Seattle University on October 30. In the final home meet of the season he captured seventh in the 200 IM against UC Santa Barbara, touching the will in 2:04.17. He also set personal best times during the conference championships in the 400 IM (4:03.35) and the 200 Fly (1:54.01) with a seventh place finish.

High School:
Sean graduated from C. Milton Wright High School in Bel Air, MD.

Personal:
Sean Dunnigan was born in Baltimore, Md., and is the son of John and Theresa Dunnigan. He has two older sisters, Shannon and Amanda. His older sister Amanda swam for the University of South Carolina women's swim team from 2005-2009. In his second year at Pacific, Sean is studying environmental science.