Takarajima
English title: Treasure Island
Japanese title: 宝島
Type: TV
Source: Novel
Episodes: 26
Status: Finished Airing
Aired: Oct 8, 1978 to Apr 1, 1979
Broadcast: Sundays at Unknown
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Tokyo Movie Shinsha
Producers: Madhouse
Licensors: Discotek Media
Genres: Adventure, Drama, Mystery
Themes: Historical

Jim Hawkins is a young boy lead by progressive events to embark on a search journey for the legendary treasure of the once dreaded pirate, Captain Flint. On their way to Treasure Island, John Silver, Jim's best friend, take over command of the ship revealing his true self as the ruthless pirate who once was the right hand of Flint himself. Feeling betrayed, Jim now has to deal with his mixed feelings and face Silver who still consider himself and Jim as friends. 

(Source: ANN)

This is an anime adaptation of the classic novel "Treasure Island" written by Scottish novelist Robert Louis Stevenson in 1882.