Seaweed Sources and Production

By pjain      Published June 29, 2019, 7:43 p.m. in blog Foodies   

Seaweed Market Forces

Market Size and Shares

The global market for fresh seaweed is projected to be $22 billion by 2024.

Advances in Seaweed Mass Production

Limu seaweed using Deep Sea enriched water

Limu is an ingredient in poke, a traditional Hawaiian dish of diced raw fish. It has been traditionally as food as well as feed for pigs, chickens, farmed fish and other animals.

Ocean Ag technology

Ocean Ag Tech needs pilot test growth to validate. However innovators such as Hawaiian Kampachi Farms said such farms likely are far off, even if the demonstration project succeeds, saying it is fundamental frontier research. The potential for commercial-scale development of such systems is still several decades in the future.

  1. Submerged lines

  2. Preselect Sea-weeds for optimal growth The four endemic species to be grown are limu manuea or ogo (Gracilaria parvispora), limu kohu (Asparagopsis taxiformis), limu kala (Sargassum echinocarpum) and sea grapes (Caulerpa lentillifera).

  3. Nutrients. supplying the plants with nutrientrich water from depths between 600 and 2,000 feet (183 and 610 meters.

Neil Sims, CEO of Kampachi Farms is seeking state and federal permits. To proceed with Blue Fields, Kampachi Farms needs regulatory approvals including a state Department of Land and Natural Resources conservation district use permit, a state Department of Health water quality certification and a permit dealing with navigable waters from the U.S. Army Corps of Engineers.

The operation 33 feet (10 meters) below the surface could potentially farm limu in quantities large enough for use as animal feed and biofuel.

  1. BIOFUELS. It tested seven Limu species on land in tanks on land supplied with deep seawater through pipes at the Natural Energy Laboratory of Hawaii Authority in Kona under a $500k grant from DoE to support engineering designs and environmental assessment work for the ocean-based system. It is now seeking a $1 million grant from the DoE because the ultimate goal is to use limu to make biofuel to produce electricity. However, limu grown offshore also helps prevent climate change as it absorbs carbon dioxide and can produce an environmental benefit by counteracting ocean acidification if grown on a big-enough scale. The environmental report said this carbon uptake will improve water quality, and that the distribution of nutrient-rich deep seawater near the surface should have no significant negative impacts on the water around the project area because nutrients would be largely absorbed by the limu.

  2. It has been working to advance commercial prospects for raising fish in ocean pens in Hawaii.


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