Its not the carbon in the air that warms the sea surface temperature. It's the long chain carbon in the water (Turbidity) and the Heat in the water in streams going into the estuaries, wetlands and coastal waters. This leads to the creation of Anoxic zones. Heterotrophic bacteria decomposing the dirty warm water take oxygen out and respire carbon dioxide. Water holds a thousand times more Heat than Air. So lets think with Common sense in Science.