When you think cruise ship, you probably think holiday, romance, and all sorts of summer fun under the sun.
This video is about none of that it's about all those things you didn't know about cruise holidays.
See also: The Titanic II will take to the seas in 2018
See also: Cruise ship leaves mum behind and sails off with her children
Here we're counting down the five strangest and most unusual facts about cruise ships.
For example did you know that cruise ships are under a very credible threat from pirates or that the ships can also legally dump waste in the ocean?
Watch the video above to find out more fascinating facts about life at sea!