5 ways aquaculture is boosting coastal economies Julia Grenn harvests sea lettuce at Big Island Aquaculture in Hayes, Virginia, on July 30, 2024. Sea lettuce is an edible seaweed high in protein, calcium, iron and magnesium. It also contains ulvan, a compound known for antioxidant and antiviral properties. (Image credit: Lathan Gouma/Virginia Sea Grant/NOAA) Download Image March 10, 2026 Research Ocean & Coasts 0 Off
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