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Sensory physiology

Brainless eyes

The visual equipment of box jellyfish includes eight optically advanced eyes that operate with only a rudimentary nervous system. As they produce blurred images, their function remains an open question.

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Figure 1: Eye see — but what? A box jellyfish of the genus Chironex.


Figure 2: The rhopalium (sensory club) of a box jellyfish.


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Wehner, R. Brainless eyes. Nature 435, 157–159 (2005).

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