Carbon that is stored in coastal and marine ecosystems is referred to as ‘blue carbon’. Blue carbon stocks (or carbon storage) have only recently been acknowledged as globally significant (Fourqurean et al. 2012). Meta-analyses reveal that blue carbon habitats, in particular mangroves, seagrass meadows and salt marshes, play a disproportionally large role in carbon sequestration relative to their global extent, making them hot spots for carbon storage (Duarte et al. 2005; McLeod et al. 2011; Fourqurean et al.2012).