farming the open ocean in the us · open ocean farming is conducted in areas that are not sheltered...
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Farming the Open Ocean in the US
Michael Chambers, UNH and NH Sea Grant
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Aquaculture is the farming of aquatic organisms such as fish,
shrimp, shellfish and aquatic plants.
Mariculture is farming the ocean.
Open Ocean farming is conducted in areas that are not sheltered
by land and have exposure to extreme sea conditions.
This could include sites that are located 10 km or more from
shore, in depths over than 50 m, tidal currents > 0.50 m / sec and
seas > 9 m.
What is Open Ocean Aquaculture?
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Worldwide capture fisheries has plateaued around 100 mmt since the 1990’s.
Currently, the U.S. imports 90% of its seafood creating an annual deficit exceeding $10 billion.
Over 50% of this seafood production comes from other countries as farmed raised product
without the strict environmental regulations enforced in the U.S. The United Nation’s Food and Agriculture Organization predicts a 40 million metric ton
shortfall by 2030 which will have to be met through fish farming.
Recent federal health guidelines call for Americans to double their seafood consumption.
If more seafood is cultured in the US, it will create jobs, reduce the carbon foot print on foreign imports, provide fresh product and will increase seafood security.
As the population grows and the demand for seafood increases, aquaculture will play an
increasingly important role in domestic and global seafood production.
Why Farm the Ocean?
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70% of the planet is ocean Yet it produces only 2% of
our food
US seafood deficit of $10 billion/yr. Growing populations will increase demand
Japan consumes > 50 kg / yr. US < 7 kg / yr.
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US Exclusive Economic Zone
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Pro’s and Con’s of Farming the OOA
Pro’s 1. Increased space for expansion 2. High water quality 3. Less user conflicts 4. Less visual concern 5. Greater dispersion of nutrients
Con’s 1. High wind and wave energies 2. Difficult to feed and monitor 3. Increased capitol investment 4. Increased risks 5. Need new culture technologies 6. Video telemetry 7. Icing
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Inshore Protected Aquaculture
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Types of Cage Systems
Floating
Submersible
Circular, HDPE (Cards, MSI, Cooke) Sea Station
Square, steel (WaveMaster)
Aquapod
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Feeding Systems (day feeders)
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Auto Feed Barges (near shore)
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1st Generation
20 ton Aquamana
Developing Offshore Feeding Technologies
2nd Generation For Sale
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Feed Monitoring
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Projects that have Advanced OOA in the US
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Funded by Occidental Petroleum
Gulf of Mexico
Red Drum
Florida Pompano
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GMIT
Gulf of Mexico
University of Southern Mississippi / Sea grant
SeaFish
GMIT
- Red drum - Cobia
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White Sea bass
Striped bass Yellowtail
California halibut
Hubbs SeaWorld Research Institute, CA
Stock enhancement Marine aquaculture
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University of Miami
• Fingerling production for ocean aquaculture.
• Developed live transport protocols to ship fingerlings to remote locations.
• They have aided Cobia culture for Ocean Blue Sea Farms in Panama and for the Eleuthera Institute in the Bahamas .
Cobia fingerlings (Rachycentron canadum)
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Two Sea Station Cages
One 3000 m3 Aquapod
Raised snapper and cobia
Planned expansion created permitting challenges
Puerto Rico
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Moved to Panama - Open Blue Sea Farms
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Hawaii - Oahu
• Joint project between the Oceanic Institute, University of HI and Cates International.
• Developed hatchery, nursery and growout technologies for the Pacific Threadfin
• Submerged culture strategies were employed with Sea StationTM fish cages.
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• Oceanic Institute
• Anuenue Fisheries
• Pacific Ocean Ventures
• Kona Blue Water Farms
• Blue Ocean Mariculture
Greater Amberjack
Hatcheries in HI
Oceanic Institute
Pacific Ocean Ventures
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Hawaii, The Big Island
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Ocean Systems Evaluated at UNH
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Oncorhynchus mykiss
Gadus morhua
Melanogrammus aeglefinus
Hippoglossus hippoglossus
Marine Fish Cultured in Sea Pens
Mytilis edulis
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• Solar powered with spread spectrum
data telemetry to shore
• Lower cost accelerometer as motion sensor – wave height
• Current speed and direction
• Sampled at three different depths including:
– Temperature – O2
– Salinity – pH – Florescence – Turbidity – Pressure
Environmental Monitoring is an Important Component
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• Ocean renewable energy and seafood production should be
integrated together of offshore infrastructure .
• Integrate environmental stewardship
– Involving integrated multi-trophic species
• Organic and inorganic species
• Marine seaweeds for bio fuels
• Develop new protein sources for fish feeds (marine plant based)
• Develop turn key ocean farming systems
• Engage fishermen and cross train in ocean farming
What’s the Future for Farming the Ocean