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Before and after of instrument in ocean for 6 months

This photo is an example of biofouling on the scientific instruments attached to the Sitka mooring.

Biofouling or biological fouling is the undesirable accumulation of microorganisms, plants, algae, and/or animals on wetted structures.


The acoustic doppler current profiler (ADCP) stopped working because it was completely encased by gooseneck barnacles. They were so dense that the ADCP could not produce a record of water current velocities.