A walrus uses its long tusks to help pull itself out of the water.
The tusks work like ice picks, helping the heavy walrus climb up onto the ice.
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The arctic fox turns brown in summer and white in winter.
A narwhal has a long spiral tusk, like a unicorn of the sea.
Reindeer hooves change with the seasons to help them walk on snow.
The snowy owl has feathers on its feet, like warm little boots.
The polar bear is the biggest bear that walks the earth today.