Fish-Man Island

A sunken paradise where bubbles breathe life and ancient dreams float above.

Fish-Man Island is a majestic underwater kingdom located one hundred meters beneath the surface of the ocean, accessible via the Knock Up Stream from the Red Line or through the Calm Belt. It stands as a poignant symbol of both the deep-seated racial tensions in the world and the enduring hope for coexistence between humans and sea-dwellers.

Quick Facts

Inhabitants

Fish-men
Merfolk
Sea Kings (surrounding waters)

Ruler

King Neptune

Key landmark

Mermaid Cove; Noah Ship

Lore & Background

The history of Fish-Man Island is defined by its complex relationship with humanity. While some fish-men harbor deep resentment due to centuries of slavery and discrimination, others dream of peace. This tension culminated in a violent conflict involving the tyrant Hody Jones and the ancient ship Noah, which threatened to destroy the island. The arrival of Monkey D.

Reader's Guide

Fish-Man Island serves as the first major stop for crews entering the New World after crossing the Red Line via the Knock Up Stream or navigating the treacherous Calm Belt. The island's role in the narrative is pivotal; it explores themes of racism, slavery, and reconciliation through the conflict between fish-men and humans. This location matters because it is where the Straw Hat Pirates officially entered the New World and secured their first major alliance against the Four Emperors. It also revealed the truth about Joy Boy and the ancient promise made ten thousand years ago, setting the stage for the final saga. Without this island, the path to Laugh Tale would remain blocked by the Red Line.

Did You Know?

The main story arc covering Fish-Man Island adapts material from the 61st to the end of the 66th volumes of the manga by Eiichiro Oda.
A remastered and condensed version called One Piece Log: Fish-Man Island Saga ran for 21 episodes from November 2024 to March 2025.
The opening theme 'We Go!' for the original season is performed by Hiroshi Kitadani.
The final four episodes of the season contain an anime original story arc called 'Z's Ambition', serving as a prologue to One Piece Film: Z.
The season originally aired on Fuji Television from October 2, 2011 to December 23, 2012.