If you’ve ever spotted a tiny rubber duck tucked away on a cruise ship and thought, “What in the world is this about?” — welcome to one of the most charming cruise traditions around. The “cruise duck” craze has been quietly making waves for years, turning ordinary sailings into playful, ship-wide scavenger hunts. It’s a little silly. It’s a little sweet. And it just might be your new favorite cruise pastime. What Exactly Are Cruise Ducks? Cruise ducks are just what they soun