Seaweed is the 'superfood' of 2021, so why is it so good for us? Marine algae gets top billing as online searches for it soar in our bid to follow a healthier diet 15 January 2021 • 5:30pm Hopping from shore to shopping bag: searches for seaweed products have increased by over 100 per cent Credit: Getty Images Seaweed is set to be the ‘superfood of 2021’ according to Waitrose in its new-year trend report. Perhaps we are all looking for interesting ingredients to make up for our lack of travel, or maybe it's a craving for colour that makes dulse and kelp a popular choice.