<p>Galapagos giant tortoises rest in a pool of mud in Volcan Alcedo’s crater on Isla Isabela. Many animals are nocturnal to avoid the heat of the day.</p>
Galapagos giant tortoises rest in a pool of mud in Volcan Alcedo’s crater on Isla Isabela. Many animals are nocturnal to avoid the heat of the day.
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Photos Reveal the Hidden World of Animals at Night
While some animals settle down as the sun begins to set, others are just starting to come alive.
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