The term “Blue Carbon” refers to the carbon stored in coastal and marine ecosystems, such as seagrasses, salt marshes, mangrove swamps, peatlands, and kelp beds. Blue carbon ecosystems are particularly important for their capacity to store carbon and are considered as a key component of nature-based solutions to climate change. It can also provide many other significant benefits - such as socio-economic benefits, increased biodiversity, or cleaner water. Unfortunately, they are some of the most threatened ecosystems on Earth. 35% of mangroves have disappeared in only 20 years for instance.