‘Vast’ carbon sink of mud on seabed needs more protection, study shows

Landmark research finds 244m tonnes of organic carbon is stored in top 10cm of marine sediment in British waters

Seabed habitats could capture almost three times more carbon than forests in the UK every year if left undisturbed, according to a report published on Thursday.

Researchers at the Scottish Association for Marine Science (Sams) have calculated that 244m tonnes of organic carbon is stored in the top 10cm of UK seabed habitats. That includes seagrass meadows, salt marshes, kelp and mussel beds but most (98%) is stored in seabed sediments such as mud and silt.