Nanaue the Shark-Man

The story belongs to the cycle of Kamohoaliʻi, the shark god and brother of the volcano goddess Pele, and it turns on a single terrible secret: the mouth on Nanaue's back. So long as the cape stayed on and the boy stayed fed on the meat his grandfather slipped him, the secret held. But when the old man died and the village rationed Nanaue to the common kapu, his hunger turned to the swimmers. He became the polite stranger at the water's edge whose courtesy was the last thing his victims ever heard.

Suspicion grew as the disappearances mounted, always near wherever Nanaue happened to be. The breaking point came at a work gathering: the chief ordered every man to strip off his kapa, and Nanaue's cape was torn away to reveal the gaping shark's mouth between his shoulders. Cornered, he transformed fully and fled to the sea, and the chase that followed carried his legend across the islands.

Nanaue is a creature of moʻolelo — the rich Hawaiian oral histories — rather than of plaster casts and roadside encounters. His tale was carried into print in the nineteenth century: it appears among the Hawaiian legends collected and published by Abraham Fornander in the great Fornander Collection of Hawaiian Antiquities and Folk-Lore, and was retold for English readers by William Hyde Rice in his 1923 volume of Hawaiian legends. Through these the Waipiʻo shark-man became one of the best-attested shark-people stories in the islands.

The tellings do not keep Nanaue in one place. Driven from Hawaiʻi Island, he is said to have fled to Maui and then to Molokaʻi, taking up his old habits at each new shore — the friendly warning, the vanished swimmer — until the people of Molokaʻi finally ran him down. The geography of the legend traces a fugitive's path across the channels, which is part of why versions of the shark-man surface on more than one island.

Nanaue sits within a wide and serious Hawaiian tradition of the manō as ʻaumakua — ancestral guardian spirits who could take shark form and who were honored, fed, and never eaten in return. A shark-man was not mere horror; he was the dark edge of a real relationship between Hawaiian families and the sharks they claimed as kin. That is what makes the legend bite: the predator wears a human face and speaks with a neighbor's voice, and the sea that sustains the valley is the same sea that swallows its children.

In the end the people of Molokaʻi are said to have netted Nanaue with strong ropes, dragged him ashore in his shark form, and cut him apart on a hillside still pointed out in the telling. The valley remembers him as a warning written into the water itself: respect the manō, mind who stands smiling at the river crossing, and never trust the man who wears a cape on a hot day.