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Dr. Marianne Walch – Director, Estuary Science and Restoration

Contact: science@inlandbays.org | (302) 226-8105 ext. 705


Dr. Marianne Walch, Director, Estuary Science and Restoration

Dr. Marianne Walch is the Center’s Director of Estuary Science and Restoration. In this position, she leads the Center’s research, monitoring, and ecosystem restoration efforts. Marianne brings over 35 years of environmental research experience in academic, federal, and state government positions to the Center. Before joining the Center in 2015, she managed stormwater quality monitoring, research, and public education programs for the Delaware Department of Transportation. Prior to that, Marianne held positions with the Department of the Navy and the University of Maryland’s Center of Marine Biotechnology, leading research programs in biofouling, oyster aquaculture, biologically influenced corrosion, bioremediation, and wastewater treatment.

Marianne grew up near Annapolis, Maryland, and moved to the Delaware shore in 2002. She earned a B.S. in microbiology from the University of Maryland and Master’s and Ph.D degrees in Environmental Microbiology & Applied Mathematics from Harvard University. Even as a child, Marianne participated in multiple citizen science programs, encouraged by her mother (a naturalist and horticulturist) and father (a NASA employee). Community science and environmental education remain among her passions.

Outside of her Center job, Marianne is Associate Director of the Silver Lotus Training Institute, where she teaches tai chi and trains instructors. She also serves as a Master Trainer for the international Tai Chi for Health Institute. Marianne also enjoys her cats, photography and art, birding, native plant gardening, hiking, and kayaking.

Marianne practicing tai chi sword.

Installing oyster cages in a South Bethany canal.

Installing oyster cages in a South Bethany canal.