It’s a good time of year to publish a Jellyfish study. From the Costa Brava to Cornwall to Hawaii to the Mexican Gulf, swimmers are anxiously scanning the water and looking for jellyfish alerts on the news. Jellyfish are discomforting, not only for their stings, but because their growing numbers are a symbol of man’s catastrophic impact on the environment. The rise in jellyfish populations is thought to be linked with overfishing, pollution and global warming, as higher water temperatures prolong their reproductive cycles. So it’s refreshing for jellyfish to get some good press for a change. A report published in Nature talks about their significant contribution to the stirring of the oceans, a crucial process that brings nutrients to the surface and oxygen to the depths. Ultimately these small-scale movements affect ocean currents and climate.
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