In a cruel twist of fate, the creature could have been sold for thousands in Japan, where the tender meat is used in sushi. But the beast was landed in the one month of each year Nathan de-registers his boat with the authorities, to allow him to fish for protected marlin. As it is illegal to sell fish caught from an unregistered fishing boat, Nathan is not allowed to profit from the whopper. In January this year a 269kg bluefin caught off the coast of Japan sold for around £500,000. But Nathan remains upbeat about his massive catch. He said: "I'm not rich so I wouldn't have minded a hundred grand, but there are rich guys overseas who would pay hundreds of thousands to mount that fish and get that on their wall and say that they caught it.''