Bloom of moon jellies, Aurelia aurita, in Chesapeake Bay; thousands of jellies aggregate together. Photo/National Science Foundation/Scott Kupiec

The Daily Catch: Blooms, or proliferations, of jellyfish can show a substantial, visible impact on coastal populations—clogged nets for fishermen, stinging waters for tourists, even choked cooling intake pipes for power plants—and recent media reports have created a perception that the world’s oceans are experiencing trending increases in jellyfish.

Now, a new multinational collaborative study, involving the University of Southampton, suggests these trends may be overstated, finding that there is no robust evidence for a global increase in jellyfish over the past 2 centuries.

The results of the study, which includes lead co-author Dr Cathy Lucas, a marine biologist at the University of Southampton, appear in the latest issue of Proceedings of the National Academy of Sciences.

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The Daily Catch


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