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sea star

Sensory Tentacles

Each arm has a short sensory tentacle at its end that responds to chemicals and vibrations in the water, and a red photosensitive eyespot. A sea star often lifts the end of an arm to perceive light and movement.

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The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on sea star Sensory Tentacles from Infoplease:

See more Encyclopedia articles on: Zoology: Invertebrates


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