Page 78 - Wonderful Creatures: Children! Have You Ever Thought ?

WONDERFUL CREATURES

bumps into it while passing by.

This being the case, one must ask the following questions: How did

parrotfish obtain this protective sheath that they use at night? How
do they know that their leading enemy hunts by means of its sense

of smell? How did they discover a substance so essential in obs-
tructing the moray’s sense of smell so enabling them to spend the

night in safety?

Obviously, one cannot expect a fish to decide to produce a chemi-

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