There's a lot that can go wrong on cruise ships. Losing too much money at the casino. Getting too drunk at the pool bar. Getting into an all-out brawl with a middle-aged woman over a prime lounge chair. Yet it seems the stakes of a vacation at sea can and will go a lot higher than classic cruise ship drama — just ask the passengers who witnessed it for themselves. 

From suspicious objects floating in the pool to sauna snafus, here are 22 nightmare cruise ship stories to make you glad you're on dry land.