Parents are being warned to return bottles of Baby Shark Hand Wash children's soap due to the risk of it breaking open and exposing a small button battery inside.
Button batteries can seriously injure or cause death in young children if swallowed.
The tiny disc-shaped batteries are small enough to swallow or fit up a toddler's nostril.
The risk has led the Ministry of Business, Innovation and Employment to post a recall notice for the Baby Shark Hand Wash on its website and in the Herald newspaper warning of the risks.
The recall notice said the hand wash's plastic lid can fall off, "exposing the device that plays the 'Baby Shark' song and allowing access to button batteries".