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Image description: Mel Parsons from the Environmental Protection Agency (EPA) dives at the Tippo Bayou sampling station in the Mississippi Delta near Philipp, MS.
In what looks like pea soup, the diver was helping to collect ‘Sediment Oxygen Demand’ information. Sediment oxygen demand refers to how much oxygen is being used by organisms and plants in the sediment. The EPA uses these measurements to better understand the overall health of the water.
Photo from the EPA

Image description: Mel Parsons from the Environmental Protection Agency (EPA) dives at the Tippo Bayou sampling station in the Mississippi Delta near Philipp, MS.

In what looks like pea soup, the diver was helping to collect ‘Sediment Oxygen Demand’ information. Sediment oxygen demand refers to how much oxygen is being used by organisms and plants in the sediment. The EPA uses these measurements to better understand the overall health of the water.

Photo from the EPA