Jellyfish

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Published 9 Sep 2007
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Jellyfish lack basic sensory organs and a brain, but their nervous systems and rhopalia allow them to perce...
Jellyfish lack basic sensory organs and a brain, but their nervous systems and rhopalia allow them to perceive stimuli, such as light and odor, and respond quickly. They feed on small fish and zooplankton that become caught in their tentacles.
Categories: Pets & Animals
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