Baby found dead on Surfers Paradise Beach

A nine-month-old baby girl has been found dead on a Gold Coast beach in Australia and her parents are now at the centre of a homicide investigation.

Queensland police say the baby had been in the water at some point before she was found alone and lifeless on Surfers Paradise Beach in the early hours of Monday morning. She had no obvious injuries and had not been reported missing.

Police later located the baby's father (48) and 23-year-old mother at Broadbeach, about 5km away from the crime scene.

They are known to police and will be questioned later in the day.

A passer-by found the child's body at the edge of the surf and raised the alarm but police say paramedics never stood any chance of reviving her.

Gold Coast Criminal Investigation Branch Detective Inspector Marc Hogan described the beach where the girl was found as "not your typical crime scene".

He said a ground and air search had yielded little evidence, with the lack of physical evidence giving "some indication of what may have happened" - a suggestion the child may have drowned.

"This is a very tragic event. It's a very sad situation," Insp Hogan has told reporters.

"It will impact a lot of people."

Homicide detectives from Queensland and New South Wales police are involved in the investigation.

NSW officers have been brought in to pin down potential movements of the couple between Tweed Heads, on the Queensland/NSW border, and Surfers Paradise.

Insp Hogan said they had been staying on the Gold Coast but did not say for how long.

The baby was found near the intersection of Staghorn Ave and The Esplanade, less than 1km from the main party precinct for  students celebrating the end of the high school year, known as 'Schoolies Week'.

But police don't believe the incident is related to this event and it wasn't a student who found the child.

Detectives are checking CCTV footage, in the hope the couple and child may have been caught on camera.

A post-mortem examination will be conducted on Monday.