Watch One piece TV special: Umi no heso daiboken hen: It was another peaceful day on board the Going Merry. Nami yelled at Luffy for whizzing in the ocean. As it'll just contaminate the fish that are swimming. Luffy was on fishing duty, but he was using sponges for bait, which he sees them to look like hamburgers. Nami couldn't believe how naive Luffy is, until he caught something big, that it dragged the ship backwards instead of forwards. The fishing line ended up at a rocky crater with a chest being chained to it. Luffy was disappointed that it wasn't something to eat. But Nami was more interested in finding out what's inside the chest. She opened it only to find just a skull inside. Usopp read the back of the skull, which engraves about...