A French will try to become the first person to swim across the Pacific Ocean. Ben Lecomte, 51, set off from Japan on Tuesday on his superhuman of crossing the ocean. It will take him more than six months to complete the 9,000-km . He will have to swim for eight hours a to reach his target on the west of the USA. He will also have to face many . There will be sharks, jellyfish, storms, seas, and very low temperatures. He will also have to fight and any injuries he picks up along the way. However, Mr Lecomte said: "The mental part is much more important than the physical. You have to make sure you always think about something ."
Lecomte has been training for six years to take up this . He has practised every day during that by swimming in the sea. This is to make sure he is in physical condition. He has also been training his mind. It will be a very swim and he needs to be mentally tough. Lecomte said he is doing the swim to raise of climate change, the effects of plastic rubbish in the ocean, and the of the Fukushima nuclear disaster on the ocean. Scientists will also study his body to monitor extreme exercise affects the heart. In 1998, Lecomte made the first trans-Atlantic swim. It took 73 days to cover the 6,400km. When he reached dry land, his first words were, " again".