From this story in Time:
"...Most people know that wild fisheries are dwindling, and we might know that low-oxygen aquatic dead zones are blooming around the planet's most crowded coasts. But the oceans appear to be undergoing fundamental changes ˜ many of them for the worse ˜ that we can barely understand, in part because we barely understand that vast blue territory that covers 70% of the globe. That's the conclusion of a surprising new report issued by the International Programme on the State of the Ocean (IPSO), a global panel of marine experts that met this year at Oxford University to examine the latest science on ocean health. That health, they found, is not good.
_According to the authors, we are "at high risk for entering a phase of extinction of marine species unprecedented in human history." It's not just about overfishing or marine pollution or even climate change. It's all of those destructive factors working cumulatively and occurring much more rapidly than scientists had expected. "The findings are shocking," says Alex Rogers, the scientific director of IPSO. "We are looking at consequences for humankind that will impact in our lifetime, and worse, our children's and generations beyond that."