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Warship Island, also known as "Battleship Island", is one of the anime-only places visited in the Warship Island Arc. The island, which is in the shape of a battleship, is where the Sennenryu, a thought-to-be extinct race of dragons that live for 1000 years, come to die and be reborn.
First Appearance: Episode 60
- The island may have been based on Japanese reality, as there two places in Japan nicknamed "Gunkanjima", or "Battleship Island". Hashima Island got its nickname from its apparent resemblance to a battleship, which caused the US Navy torpedoed it during World War Two . Mitsukejima also got its nickname because of its shape.