Benny the beluga drew in crowds after appearing in Gravesend River Thames on September 26th thousands of miles from its natural arctic habitat.
His residence has prompted Gravesham council to postpone its popular annual firework display until further notice.
The fireworks were originally supposed to be set off from a boat in the Thames on November 2nd, but the Port of London Authority has advised that fireworks in or around the area would cause disturbance to Benny.
Councillor David Turner, Leader of Gravesham Borough Council said,
The fireworks will be rearranged when Benny leaves Gravesend to go to his winter retreat. Gravesham Borough Council council is encouraging its residents to 'enjoy spotting Benny' in the meantime.