Rubber ducks are usually found swimming in bathtubs - not in one of the worlds most famous harbours!
But that's what's happening in Sydney, Australia where a 15 metre high rubber duck has taken to the water.
The duck is floating in the water as part of a rehearsal for a festival at the weekend.
Its creator Florentijn Hofman said he made the duck because "the global waters are our bathtub, so it joins people."
The giant toy will remain in the harbour until 23 January.
Imagine trying to share a bath with that!