If you re on a sinking ship or you fall overboard, and you don t have a legitimate flotation device, it s time for the pants to come off.

This clever survival trick will help you float on the water so you use less energy while waiting for someone to rescue you.

This video from the BlackScoutSurvival YouTube channel demonstrates the survival technique that s taught to all U.S. Marines.

As soon as you hit the water, pull those pants off.

Once they re off, tie the pant legs together with a simple square knot, then grab the pants by the waistline.

Now pull them out of the water and give them a good whip, letting the pant legs fill with as much air as possible before hitting the water again.

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