“But kelp farmers are doing a brisk business and the nascent industry holds the promise of filling the economic holes left by these collapsing fisheries. At Ocean Approved’s four-acre sugar kelp farm off the coast of Falmouth, Arnold installs a specially-designed pH and CO2 sensor. ‘As these beautiful deep green fronds mature to 14 to 20 feet, we expect CO2 and pH levels to drop, essentially creating a micro-climate of ocean healing while producing a healthy and profitable crop,’ explains Arnold.
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