In 1990, Acaba received his bachelor's degree in geology from the University of California, Santa Barbara and in 1992, he earned his master's degree in geology from the University of Arizona. Acaba was a sergeant in the United States Marine Corps Reserve where he served for six years. He also worked as a hydrogeologist in Los Angeles, California. Acaba spent two years in the United States Peace Corps and trained over 300 teachers in the Dominican Republic in modern teaching methodologies. He then served as island manager of the Caribbean Marine Research at Lee Stocking Island in the Exumas, Bahamas.
