The Green, Green Grass of the Sea

A trial is to be made off the Pembrokeshire coast to plant the area with rapidly growing sea grass (https://www.bbc.co.uk/news/av/uk-wales-49573170/carbon-reducing-seagrass-to-be-planted-off-pembrokeshire-coast). Sea grass has, reportedly, a more impressive carbon capture rate than tree planting on land (and are hence helpful in the attempt to control climate change). These plants also serve as nurseries for many marine organisms (so they will increase productivity). Some people have suggested that areas where sea grass are already located should be better protected as they are a valuable resource.