Quick facts Today, 4,8% of the world's oceans is protected. Only 2,2% of oceans worldwide is a highly protected reserve. Nearly 200 million people globally depend on coral reefs to protect them from threats from the ocean. Up to 90% of the coral reefs might be gone within 30 years, if current trends continue. Since 1950, fisheries worldwide have taken almost 6 billion tonnes of fish and other seafood from the oceans. It is estimated that 90% of the world’s seabirds have fragments of plastic in their stomach. Approximately US $ 25 trillion is brought into the local economy by the oceans.