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Comprehension Question
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- 1. Who used high-resolution scans to uncover the unusual anatomy of the fish?
2. Where is the rockhead poacher found along the northeastern Pacific coast?
3. What sits at the center of the skull of this unusual fish?
4. Why might the fish use percussive vibrations to communicate in noisy water?

Discussion Question
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- 1. Why do scientists study small creatures that have no commercial value?
2. How does camouflage help animals survive in noisy and dangerous habitats?
3. What other animal has a strange body part for a special purpose?
4. Is it important to record sounds of live animals in nature?