What is "trunko"

Trunko is the nickname for an animal or globster reportedly sighted in Margate, South Africa, on 25 October 1924, according to an article entitled "Fish Like A Polar Bear" published in the 27 December 1924, edition of London's Daily Mail. The animal was reputedly first seen off the coast battling two killer whales, which fought the unusual creature for three hours. It used its tail to attack the whales and reportedly lifted itself out of the water by about 20 feet. One of the witnesses, Hugh Ballance, described the animal as looking like a "giant polar bear" during a final fight.