GreenWave is a new non-profit that wants to improve our food sources while cleaning the seas. Kelp usually grows on the ground or sides of anything inorganic underwater, what GreenWave has done is to build an efficient way to harvest kelp from these sources. A benefit of this is that kelp naturally cleans the water around it so now we can get kelp in a faster way while cleaning the water.
As a result of their approach, GreenWave has won the Buckminster Fuller 2015 challenge.
This new approach moves us from growing vulnerable monocultures to creating vibrant ecosystems, which work to rebuild biodiversity and produce higher yields. The infrastructure is simple: seaweed, scallops and mussels grow on floating ropes, stacked above oyster and clam cages below. From these crops ocean farmers can produce food, fertilizers, animal feeds, pharmaceuticals, cosmetics, biofuels and much more. The farms are designed to restore, rather than deplete our ecosystems. A single acre filters millions of gallons of ocean water every day, creates homes for hundreds of wild marine and bird species and absorbs the overabundance of nitrogen and carbon (with kelp sequestering 5x more carbon than land based-plants) that are killing billions of organisms. The design requires zero-inputs—there is no need for fresh water.