Tracing the puzzling origins of clinging jellyfish

For such small and delicate creatures, they can pack mighty painful stings. Known as clinging jellyfish because they attach themselves to seagrasses and seaweeds, Gonionemus is found along coastlines in the Pacific and Atlantic oceans, and in particular in waters near Vladivostok, Russia. Exactly how these jellyfish, long assumed to be native to the North Pacific, became so widely distributed throughout the world has perplexed researchers for decades.

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