Front part of body of a prosn (Spirontocaris polaris) from above, showing on the right side a swelling of the carapace caused by the presence of the parasite Bopyroides hippolytes in the gill chamber--A. Female parasite extracted and further enlarged--B; Male parasite on the same scale as the female--C
Collected from Puget Sound sediments and photographed by the Washington State Department of Ecologys Marine Sediment Monitoring Team. For more information about this teams work visit: www.ecy.wa.gov/programs/eap/psamp/index.htm.