Jellyfish Are Smarter Than Previously Thought

Jellyfish are more advanced than once thought. A new study from the University of Copenhagen has demonstrated that Caribbean box jellyfish can learn at a much more complex level than ever imagined--despite having only one thousand nerve cells and no centralized brain. The finding changes our fundamental understanding of the brain and could enlighten us about our own mysterious brains. After more than 500 million years on Earth, the immense evolutionary success of jellyfish is undeniable. Still, we have always thought of them as simple creatures with very limited learning abilities.

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