Authorities believe that it may have been a white whale called Migaloo, one of three

white whales that live in waters in the state of Queensland, but that has not been confirmed.

The white humpback delighted hundreds of whale watchers who paid chartered boats to watch

it leisurely swim in the waters.

Unfazed by its audience, the huge animal came up to the surface, delighting onlookers.

Up to 5,000 humpbacks migrate north up Australia's east coast between April and August each year

from feeding grounds in the Antarctic to feed and breed in warm, tropical waters.