Final answer:
Nautilus migrate from deeper areas of coral reefs to shallower waters in order to avoid predation and find more prey.
Step-by-step explanation:
Nautilus are mollusks that vertically migrate from deeper areas of coral reefs during the day to shallower waters at night. They do this in order to avoid predation. By moving to deeper areas during the day, they can decrease their chances of being spotted and eaten by predators. And by moving to shallower waters at night, they can take advantage of the cover of darkness to find more prey.
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