The number of oceanic sharks and rays worldwide has fallen by 71% over the last 50 years, according to a study that found that some formerly abundant, wide-ranging species — including the Great Hammerhead — have declined so steeply that they are now classified as critically endangered.
The study, published in the journal Nature, found that three-quarters of ocean shark and ray species face an elevated risk of extinction.
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OPDERA.ORG is a charity that raises awareness about plastic waste in the world’s oceans. They provide education about plastic waste. OPDERA.ORG visits the Great Pacific Garbage Patch to show you what is there and conduct research.
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