Children find baby's body while playing on the beach

NIPPERS participating at a junior life saving carnival made a gruesome discovery after they found a child's body buried in sand dunes at a popular Sydney beach.

NSW Police confirmed in a statement a crime scene had been established following the discovery of a baby's body on Sunday morning at the beachside suburb of Maroubra in the city's south.

"About 10:05am, a number of children were playing at the southern end of South Beach when they located the body of a baby in the sand," the statement said.

"Police from Eastern Beaches Local Area Command were called to the beach and established a crime scene which will be examined by specialist forensic officers.

"Officers from the Police Rescue Squad attended the scene and investigations into the child's death are continuing, however, the age and sex of the child is yet to be determined."

Police said post mortem examination would be conducted to establish the cause of the child's death.