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Hydrodictyon reticulatum

This sample was taken from a beaver pond which drains into the North branch of Muddy Creek on the Rhode River, MD. The water is very still there, which is ideal for Hydrodictyon growth. This colonial species can create a net eight inches long; each cell can average up to 200µ long. Often it can become a nuisance causing an imbalance in the ecological surroundings.
See Prescott or Wehr and Sheath in Taxonomic References.