★ 6.7 Special
One Piece Special: Open Upon the Great Sea! A Father's Huge, HUGE Dream!
One Piece: Umi no Heso no Daibouken-hen
ONE PIECE TV Special: Umi no Heso no Daibouken-hen · ONE PIECE TVスペシャル 海のヘソの大冒険篇
The Straw Hats encounter a city in the middle of a whirlpool, called the Ocean's Navel, that is being destroyed by giant monsters. These monsters supposedly protect a treasure capable of granting wishes, but in the process of… Read more
Storyline
The Straw Hats encounter a city in the middle of a whirlpool, called the Ocean's Navel, that is being destroyed by giant monsters. These monsters supposedly protect a treasure capable of granting wishes, but in the process of defeating these guardians, the crew ends up releasing another evil. (aired after Episode 53)
Characters & Japanese Voice Cast
Luffy Monkey
Main
VA: Mayumi Tanaka
Zoro Roronoa
Main
VA: Kazuya Nakai
Sanji
Main
VA: Hiroaki Hirata
Nami
Main
VA: Akemi Okamura
Usopp
Main
VA: Kappei Yamaguchi
Captain Joke
Supporting
VA: Akio Ootsuka
Meroie
Supporting
VA: Ikue Ootani
Hamu
Supporting
VA: Minami TakayamaSeasons & Related Anime
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One Piece Special: Open Upon the Great Sea! A Father's Huge, HUGE Dream!
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Frequently Asked Questions
How many episodes does One Piece: Umi no Heso no Daibouken-hen have?
One Piece: Umi no Heso no Daibouken-hen has 1 episodes.
Which studio made One Piece: Umi no Heso no Daibouken-hen?
One Piece: Umi no Heso no Daibouken-hen is produced by Toei Animation.
Facts from AniList (also listed on MyAnimeList); streaming availability from JustWatch India. Last updated 17 October 2026, 5:55 AM IST. Episode times are Japan broadcast times shown in IST. Spotted a mistake? Write to [email protected].