By Rumiko Takahashi (高橋留美子). Part three of the Mermaid Saga (人魚シリーズ / Ningyo Shirīzu). Preceded by Mermaid's Scar.
Originally serialized in Shonen Sunday Zokan and Weekly Shonen Sunday. Collected in three volumes by Shogakukan.
The panels are formatted to read in the Western left-to-right format.