Blue carbon ecosystems such as mangroves, tidal marshes, and seagrass meadows have an incredible ability to capture and store carbon while providing irreplaceable habitats for critical species, improving water quality, providing coastal protection, and supporting healthy fisheries. Yet these blue carbon ecosystems are being lost each year to aquaculture, mangrove forest exploitation, pollution, coastal development, and conditions driven by climate change. This team aims to capture broad trends on the health of blue carbon ecosystems on a global scale to allow for more informed decisions and questions.