A jar of Atlantic Sea Farms seaweed salad is seen Thursday, Dec. 10, 2020, in Freeport, Maine. Like many pieces of the seafood industry, seaweed is highly dependent on the restaurant sector, which made the pandemic a potentially major setback. But representatives for a company that works with two dozen Maine seaweed farmers said it nearly doubled its harvest this year to 450,000 pounds. (AP Photo/Robert F. Bukaty)

Peter Crimp, kelp supply director for Atlantic Sea Farms, inspects the growth of seaweed spores on a spool of twine at the company's nursery, Tuesday, Dec. 8, 2020, in Saco, Maine. The twine will be wrapped around line and set out to grow in the ocean until harvest time in the spring. (AP Photo/Robert F. Bukaty)

Peter Crimp, kelp supply director for Atlantic Sea Farms, checks on tanks of seaweed spores growing at the company's nursery, Tuesday, Dec. 8, 2020, in Saco, Maine. Seaweed harvesting and farming in Maine has grown for several years as interest in foods and nutritional products made with the marine algae have risen in popularity. (AP Photo/Robert F. Bukaty)

In this Wednesday, Nov. 4, 2015, photo, kelp grows on spools of twine at a lab at the University of New England in Biddeford, Maine. Seaweed started in a nursery is being transferred to aquaculture farms in coastal Maine waters. (AP Photo/Robert F. Bukaty)