Gulf Oil a Looming Threat to Marine Life

So far, we're not seeing the large-scale impact of this oil spill on marine life. But there are concerns out there. It may not be immediate, like oil-coated birds, but slower and more subtle, like the effect on oxygen levels in the sea. This is a complex ecosystem we're dealing with.

From NPR...

Especially troubling to scientists are the effects the oil and dispersants could be having on dissolved oxygen levels in the water. Scientists fear the oil will make it difficult for marine animals to obtain the oxygen they need to survive. Scientists have already observed some dying fish.