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Without swift, national action to protect the ocean's vast diversity of life from acidifying waters corals, shellfish, salmon and a whole host of beautiful creatures will be lost.
We need your help to ask President Barack Obama and the Environmental Protection Agency to get working on a bold plan to curb ocean acidification.
The decline since 1996 has largely been in fish caught by industrial fleets and to a lesser extent a cut in the number of unwanted fish discarded at sea.
"The fact that we catch far more than we thought is, if you like, a more positive thing," he said.
Currently, only 2% of the world's oceans are under some form of protection and less than half of those ban fishing altogether.
In contrast, nearly 15% of the world's terrestrial landscape is protected.
But now seabirds seabird abundance has dropped 69.7% in only 60 years, according to a recent paper in PLOS ONE.
Edd Hammill with Utah State University and co-author of the paper, noted: "What we should take away from this is that something is serious amiss in the oceans." Ben Lascelles, with Birdlife International, found the research alarming because the decline appeared practically indiscriminate, hitting a "large number of species across a number of families." Michelle Paleczny with the University of British Columbia and the Sea Around Us Project said: "When we see this magnitude of seabird decline, we can see there is something wrong with marine ecosystems.
Paleczny and Hammil's research found that the tern family has fallen by 85%, frigatebirds by 81%, petrels and shearwaters by 79%, and albatrosses by 69%.