Dr. Dinnel is a specialist in the areas of marine ecology and toxicology, with a special interest in shellfish resources. His 38 years in the Puget Sound region (includes 18 years as a Research Scientist at the University of Washington and 15 years with Western Washington University) have been spent as Project Leader/Co-Principal Investigator on numerous projects sponsored by the U. S. Environmental Protection Agency, NOAA, U. S. Army Corps of Engineers, U. S. Navy, Seattle METRO, Exxon, ARCO and a variety of state, local and tribal agencies. Many of the projects that Dr. Dinnel has led have involved questions of water and sediment quality related to effluents, dredging and historical pollution.
Dr. Dinnel has authored over 100 scientific technical reports and publications and written EPA and ASTM protocols for two types of sea urchin bioassays, Washington State protocols for embryo and larval herring bioassays, and co-authored a trawl protocol for Puget Sound. Recent work includes projects to restore native oysters and pinto abalone in Puget Sound.