Imagine a peaceful voyage at sea, with puffy clouds overhead and the gentle rise and fall of the waves. Now imagine that you're lost. There's a hurricane looming on the horizon. Sharks begin to circle your boat. And you're down to your last sip of fresh water. Accidents on the water can lead to life-and-death struggles. See how the strong survive.

Survival at sea -- Teens in trouble -- Alone at sea -- Hurricane on the Pacific -- Stranded with sharks -- Survival in the South Atlantic -- Four months adrift -- 10 boating safety tips.