Sea Jelly Quiz
What is the scientific name of the Immortal Jellyfish?
What are the cells called that house their harpoons?
Ampullae of Lorenzini
What organ does a sea jelly not lack?
Central nervous system
About how long ago did sea jellies evolve? And in what period?
600 million years ago: Cambrian
480 million years ago: Ordovician
700 million years ago: Precambrian
500 million years ago: Cambrian
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