Microbiologists recently discovered a way to combat worldwide ocean dead zones that are attributed to nitrogen-based fertilizers. Naturally occurring bacteria called rhizobia could replace nitrogen in fertilizer once more is learned about one of its genes called HrrP. Reduced nitrogen runoff would translate into fewer ocean dead zones.
Blue crabs can survive in oceans with lower oxygen concentrations. A recent study suggests that blue crabs will remain resilient even as water temperatures increase and oxygen levels decrease.