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Sunny Spiral
Seeds on a sunflower grow in two spirals: One spiral grows left, the other grows right. Why two spirals? This is the best way to fit the most seeds onto the flower head.
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Shaped for Survival
This is a bighorn sheep. The ram's strong, brown horns curl around the side of its head. These spiraled horns are a powerful weapon when the ram has to butt heads with another ram.
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Swirling Spiral
The swirling winds of a tropical storm create a spiral of clouds and rain. Depending on where in the world these storms start, they have different names: hurricane, typhoon, or cyclone.
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