There has only ever been one reported sighting of Trunko and that was at Margate, South Africa, on October 25, 1924 and everyone that saw it said that it was fighting with two orcas. The fight went on for about three hours.
It was eventually found washed up on the beach and even though the carcass was there for ten days, no scientist ever investigated it and no pictures were taken either so there is no evidence other than the many people that were there to prove that this fight ever happened.