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Tough to get your head around! Scientists discover jellyfish can learn from past experience - despite having no brain

No bigger than fingernail, the Caribbean box jellyfish hosts a complex visual system of 24 eyes that allows them to recognise obstacles while navigating mangrove habitats.

Anders garmUniversity of copenhagenAssociate professorCurrent biologyProfessor garm

Jellyfish, with no central brain, shown to learn from past experience

Jellyfish, with no central brain, shown to learn from past experience
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Anders garmJan bieleckiKiel universityUniversity of copenhagen

Jellyfish shown to learn from past experience

Even without a central brain, jellyfish can learn from past experiences like humans, mice, and flies, scientists report for the first time on September 22 in the journal Current Biology. They trained Caribbean box jellyfish (Tripedalia cystophora) to learn to spot and dodge obstacles. The study challenges previous notions that advanced learning requires a centralized brain and sheds light on the evolutionary roots of learning and memory.

Anders garmJan bieleckiDeutsche forschungsgemeinschaftMethod of researchDanish research councilVillum foundationUniversity of copenhagenGerman research foundationKiel universityCell press

Brainless Jellyfish Demonstrate Learning Ability

Because box jellyfish are so distantly related to other animals, the research findings could hint at how the ability to learn first evolved.

United statesNew south walesAnders garmKen chengJan bieleckiMichael abramsUniversity of californiaMacquarie universityUniversity of copenhagenInstitute of physiology at kiel universityCurrent biologyKiel universityNervous systemAnimal cognitionAnimal intelligenceAnimal behavior

These Deadly Jellyfish Could Help Us Understand Our Own Brains

It turns out that, even though they have no brains, they can learn and form memories.

United statesJackie appelAnders garmCurrent biologyPopular mechanics all sections

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