Box jellyfish have sophisticated eyes with a lens and a retina. How big is its brain?

about the size of a peanut
about the size of a wallnut
about the size of a coconut
jellyfish have no brain
Their speed and vision leads some researchers to believe that box jellyfish actively hunt their prey. Since they have no brain, the mechanisms that could make it happen remain unknown.
Paul Caspack
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Very interesting!
reach: rather globalanimalsjellyfishmarine animalsnaturesea animalszoology

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about the size of a peanut
about the size of a wallnut
about the size of a coconut
jellyfish have no brain
answers
flagthe Netherlands
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flagGreece
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flagAustria
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flagRussia
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flagUkraine
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flagAustralia
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flagthe Philippines
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flagCanada
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flagGermany
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flagthe United Kingdom
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flagPoland
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flagUnknown
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flagthe United States
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flagKazakhstan
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flagFrance
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flagSwitzerland
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flagBelarus
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flagPakistan
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flagIndia
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flagMalaysia
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