From Sky News:
A baby whale lost off the coast of Australia has bonded with a makeshift mum - a 36ft-long yacht.
The whale pictured with its new 'mum'
The humpback calf, which is no more than two months old, has even tried to suckle the vessel.
Rescuers say the whale was spotted off Sydney's northern beaches over the weekend and soon came across the boat.
When it would not detach itself, the yacht was towed into deeper waters and the calf eventually let go, although it continued to swim nearby.
The whale, which is being monitored, appears to be exhausted and rescuers hope it will swim further out to sea in search of its mum or another pod.
National Parks and Wildlife regional manager Chris McIntosh told ABC radio: "The outlook is not good, but we are giving the calf its only option.
"It can't be fed, and in fact we wouldn't know what to feed it."
The annual whale migration is under way off Australia's coast and several have been spotted off Sydney beaches in recent days.
Humpbacks breed every one to three years, with a gestation period lasting up to 12 months.
Scientists believe the mammals can live up to 80 years.