Other Aquatic reports in District of Columbia
1 case, best-documented first. Page 1 of 1.
We map claims, not creatures. A case is what some source says someone saw or heard, with the link to that source. It is not proof that anything was there, and a retelling counts once, not as a second sighting.

Other Aquatic · Washington, District of Columbia · 1933
Two score citizens reported seeing an 80-foot nightmare creature in the waters from the Strait of Juan de Fuca toward Prince of Wales Archipelago.