Marieta received a BS in Home Economics Education from Kansas State University. Her experience includes teaching at both the junior and senior school levels. In 1980 she moved to operations and administration, first working in a real estate office, then for an independent geologist. In 1994 she became the finance and administrative manager for an international telecommunications firm based in Tokyo that later moved to Pleasanton, California. She joined Algalita Marine Research Foundation in 2002 as Director of Operations, becoming the fledgling organization's lone employee and is now Executive Director, working with a staff of approximately fifteen contractors and volunteers. In this capacity she is responsible for overseeing the general operations of the foundation as well as coordinating research projects, education activities, bookkeeping/accounting, grantwriting and handling media requests. She represents Algalita at conferences, and is a respected spokesperson for the organization.