From Time Magazine:

“…while news of the Earth’s impending doom can sometimes seem exaggerated, there’s one environmental disaster that never gets the coverage it really deserves: the state of the oceans. 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.”

Read more: http://www.time.com/time/health/article/0,8599,2078840,00.html#ixzz1PvIiyNtd