In addition to providing a renewable fuel solution with minimal conflicting issues, seaweed cultivation is believed to have several other positive effects on the environment.
CO2 uptake and storage
Better overall biodiversity and increased level of dissolved oxygen in the sea lead to increased fish stocks in vicinity of farms; some of commercial importance (food security)
No pollution (less or no need for fertilizer and pesticides)
Biofilter (ability to absorb pollutants in the water)
Assist in reducing coastal eutrophication; improve water quality
IMTA (Integrated Multi-Trophic Aquaculture) implemented in areas with intensive fish farming to remove excess nutrients and waste products from fish farms
Counterbalance to diminishing wild seaweed resources
Help mitigate climate change and ocean acidification