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A new experiment finds that jellyfish are capable of learning from past mistakes and adapting their behavior.

In “Brainless jellyfish are capable of learning, study suggests,” Sarah Kuta (Smithsonian Magazine) writes, “Scientists provide evidence that tiny Caribbean box jellyfish—which lack a central nervous system—can learn to navigate through mangrove roots.” [Many thanks to Peter Jordens for bringing this item to our attention.] In the warm waters of the Caribbean, box jellyfish carefully…

Researchers in a new study discovered that some jellyfish can "learn and remember" despite having about a thousand nerve cells and no centralised brain.

Working with the Caribbean box jellyfish, a team of researchers was not shocked to find the animals could learn, but "it was a surprise how fast" they learned.

Jellyfish are far more intelligent than previously thought.