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Carbon dioxide pollution is also being absorbed by the ocean, causing its chemistry to change and become more acidic.This spells trouble for marine animals that are now having difficulty building shells, growing and sometimes even surviving in increasingly corrosive waters.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%.Lascelles said: "Increased efforts should be made to rid seabird colonies of invasive species, reduce bycatch in fisheries or the ensnaring of birds in fish nets, and setting up conservation areas." Paleczny also called for the creation of international marine protected areas to cover the wide ranges of seabirds.Plastic in animals' stomachs not only release deadly toxins, but can also lead to slow starvation by obstructing the animals' bowels.

We know how to fix this problem but whether we do it or not depends on conditions that are difficult." A 2015 study showed nearly 500 Chinese fishing vessels operating off west Africa, with scores of cases of illegal fishing, according to Greenpeace.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."We can see how industrial fisheries from developing countries are robbing these people of livelihoods and food.We can also see, that in efforts to stem declines, we have been using more and more bycatch that was once thrown away." Seabirds have been around for sixty million years, and they are true survivalists: circumnavigating the globe without rest, diving more than 200 meters in treacherous seas for food, braving unpredictable weather and finding their way with few, if any, landmarks.

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