Mark the bear and his sister Liza were brought to the restaurant as cubs two decades ago after their mother was shot dead, according to its then owners.
The announcement was to be made on Sunday, but was cancelled because of an outbreak of cases reported in Melbourne.
PM Scott Morrison approved reopening Christmas Island after a legislative defeat in Parliament allowed refugees and asylum seekers detained in existing offshore centres to travel to Australia for medical treatment.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2023 TRT World.