Seaweed is being used to tackle the big climate challenges, but in the UK the industry is still being developed.
It is being used by firms as a solution to capture carbon, reduce methane when used in animal feed and to cut down the use of plastic.
Plastic pollution is having a global impact, with plastics found from the polar sea-ice to the deepest part of the ocean.
UK firm Notpla, that makes packaging from seaweed, has been named as one of the £1m winners of the Earthshot climate prize.
The Prince of Wales is in Singapore ahead of the awards ceremony for his Earthshot prize on Tuesday.
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