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This is a bronze, two blade propeller on a stainless steel shaft covered in zebra mussels on a 36 foot sailboat.  There is a bronze shaft strut supporting the assembly that has been painted along with the rest of the boat bottom.  It is a blue colored antifouling paint designed to impede the growth of algae and marine organisms in fresh water.  Zebra mussels have attached themselves to the shaft and propeller which were not painted.  Also, there is a sacrificial magnesium anode on the shaft which the zebra mussels cannot attach themselves.  The sailboat is on dry land resting on a red cradle where it will remain until spring.
Seafood platter in La Rochelle in Charente-maritime in France
Fishermen embedding mussels in a rope for industrial seafood farming. Aquaculture concept.
Fishing boat and anchor in the harbor
Boat cleaning at sea. He's trying to get a plastic bubble thrown into the water.
Close-up of barnacles on the beach at low tide
Depoe Bay, Oregon USA - August 5, 2023: Fishermen, deck hands and divers fishing for Sea Urchins in the kelps beds of Depoe Bay Oregon.
Fresh abalone ingredients
Numana (AN), Italy - January 1, 2019: Musselsi at  Numana port, Riviera del Conero, Adriatic Sea, Numana, Ancona, Marche, Italy
Marina with Moored Luxury Fishing Boats in Foreground, Buoys, Dark Blue Sky and Water, Wells, Maine, USA.
Oyster beds and oyster farming in Wellfleet MA
Tarpon Springs, United States a tour boat with sea sponges and diving flags is docked by the downtown area of the small town on a summer day.
Fishing village with large pile of oyster shells and shrimp fishing boats on water
Fisherman boat and net
A scene of fishermen landing oysters
Lobster traps stacked in a Nova Scotian fishing village.
live fresh Zebra mussels for sale in a tray at local market in Phuket Thailand
Oregon Coastline stretches from south to north, from the borer of California to the Columbia river.
A cluster of Mussels clinging to a rock on a beach in Newquay, England.
Georgetown,  Sagadahoc County, ME, New England, USA: lobster boat moored - Parker's Island, Sheepscot Bay, Atlantic Ocean.
Hand holding freshwater golden clams, Corbicula fluminea, freshly harvested from an Indonesian lake by a local farmer.
Aerial view of a man rowing a dory on the sea with a woman aboard.
Small broken cockleshells on beach. Close up of mussels near the sea shore. Seashells on the coast
Newfoundland and Labrador, Canada.
Port and fisherman’s cabin in background of Fouras in France, also known as Fouras-les-Bains, is a commune in the French department of Charente-Maritime, administrative region of Nouvelle-Aquitaine in Poitou-Charentes. It lies 34 km south of La Rochelle
Motorboat Entering Marina, Buoys, Cormorants Sitting on the Pier, Blue Sky and Water, Wells, Maine, USA.
Fishing boat
Dundalk, County Louth, Ireland: stern of a razor dredging boat with the specialized suction razor derrick (for Ensis siliqua, also known as the razor fish, razor clam or giant razor) - hydraulic dredges fluidise the seabed to the depth of the target species, for the razor clam this could be over 20cm, much of the substrate and its constituents is removed or relocated, mortality of associated (soft bodied) organisms is very high and the environmental impact is significant - cockle fisheries - Dundalk harbor, Irish Sea
River clams on the rock in a clean river. Anodonta anatina
Fishing boats moored in a canal at Strunjan village close to the town Piran, Adriatic sea, Slovenia
Free Images: "bestof:Oyster boat dredging up mussels in Narragansett Bay.jpeg check categories 8 September 2015 4 Oyster boat dredging up mussels in Narragansett Bay Subject Fishing"
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