Healthy coastal ecosystems like mangroves, seagrasses, and saltmarshes can provide an incredible array of services to both people and nature. They provide nursery habitat for fish and crabs, feeding areas for shorebirds, help improve water quality and protect communities and homes from storm surge events and flooding. They can also absorb and store carbon at concentrations up to four times higher than terrestrial forests and retain the carbon in sediment for millennia.