Home > Term: nictitating eyelid
A movable eyelid found in sharks that can be closed over the eye to protect it from damage. Sharks also have non-moving upper and lower eyelids.
- Μέρος του λόγου: noun
- Κλάδος/Τομέας: Natural environment
- Category: Coral reefs
- Organization: NOAA
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- Grpu76
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