Globally, the extent of the blue carbon ecosystem has been estimated at 120,380 km2, with the highest spread by mangroves at 114,669 km2 , followed by seagrass meadows at 2,201 km2  and salt marshes at 3510 km2  . In Asia, the total extent of these three ecosystems is 33,224 km2, forming 27.6% of the global total with the highest spread of mangrove at 32,767 km2, which forms 28.6% of the global mangrove coverage. The area of seagrass meadows spread in Asia has been estimated as 236 km2 and salt marsh 220 km2, which forms 10.8 and 6.03% of the respective ecosystems globally . Found at the land- sea interface, seagrasses provide varied services apart from acting as ecosystem engineers providing shelter and habitat for several marine fauna which are fished in several Asian countries  thereby providing livelihood to millions across the continent .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report