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| Illustration by Natalya Zahn |
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Octopuses
Octopuses have eight arms with two rows of suction discs on each one (lower left). They use their arms to scurry along the ocean floor. When they sense danger, octopuses shoot out ink to darken the water and hide themselves. Their mouths can drill into hard shells and tear prey (lower right).
Parents: Check out our video Amazing Planet: Creatures of the Deep
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