海草面临风险

motion footage of a sea grass in a suffocating ocean. Shot in the delicate ecosystem of the fjord Isefjord in Denmark, showing the result of farming activities, failure of wastewater management, sludge displacement, and urban construction projects. Most importantly, fertilisers and excess nitrogen runoff from farming leads to ocean eutrophication, promoting the rapid growth of phyto plankton and loose algaes such as Ectocarpus siliculosus and Pylayella littoralis. These will rapidly cover and suffocate beads of sea grass and macro algae. As these organisms die and decompose, they deplete oxygen levels in the water, causing the formation of dead zones where marine life struggles to survive. Eventually, sulfur bacteria and toxic hydrogen sulphate gas on sea bed will kill all existing life, including sea grass, fish, mussels, crabs and other invertebrates. This tragic loss of marine biodiversity could be countered by responsible governmental regulations and green, technological solutions.