This undated handout from the Australia Zoo received on August 22, 2017 shows a white koala joey holding onto her mother Tia at the Australia Zoo on Queensland's Sunshine Coast. The female joey's extremely pale colouration is caused by a recessive gene and thought to be inherited from her mother Tia who has had other pale coloured joeys in the past. The joey is yet to be named with Tourism Australia set to encourage naming suggestions. - RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / AUSTRALIA ZOO" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVE / AFP / AUSTRALIA ZOO / Handout / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / AUSTRALIA ZOO" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVE

This undated handout from the Australia Zoo received on August 22, 2017 shows a white koala joey on her mother Tia at the Australia Zoo on Queensland's Sunshine Coast. The female joey's extremely pale colouration is caused by a recessive gene and thought to be inherited from her mother Tia who has had other pale coloured joeys in the past. The joey is yet to be named with Tourism Australia set to encourage naming suggestions. - RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / AUSTRALIA ZOO" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVE / AFP / AUSTRALIA ZOO / Handout / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / AUSTRALIA ZOO" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVE

This undated handout from the Australia Zoo received on August 22, 2017 shows a white koala joey at the Australia Zoo on Queensland's Sunshine Coast. The female joey's extremely pale colouration is caused by a recessive gene and thought to be inherited from her mother Tia who has had other pale coloured joeys in the past. The joey is yet to be named with Tourism Australia set to encourage naming suggestions. - RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / AUSTRALIA ZOO" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVE / AFP / AUSTRALIA ZOO / Handout / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / AUSTRALIA ZOO" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVE