If you see square waves in the ocean get out of the water immediately

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Going out in nature is refreshing and relaxing, but there’s always danger lurking around the corner. You may have street smarts, but lack wild-smarts. So instead of getting struck by lightning or drowning in a rip current, learn about the different ways nature warns you away from disaster and imminent natural disaster.

Plus, sometimes you just can’t check the weather forecast and want to know if it’ll rain tomorrow.