A white whale calf spotted off the Whitsundays coast is believed to be just a few weeks old but it's impossible to tell yet whether the animal is related to Migaloo.
Species expert Mark Read, of the Great Barrier Reef Marine Park Authority, said without DNA information experts would be unable to link the calf to the other famous white whale.
"We know from basic genetics that this animal could have come from a dark mum and dark father and Wayne Fewings, who took the photograph, said the female was in attendance was a standard dark humpback."
Wayne Fewings captured the white calf on camera while diving near the entrance to Cid Harbour last week.
Mr Fewings, who calls both the Whitsundays and the Gold Coast home, said he and his son's family were in a 4.5m runabout boat when the white calf, believed to be around 4m in length, and two predominantly black adult humpback whales swam towards them.