Adaro: The Malevolent Sea-Spirits of the Solomon Islands

Fish-Men of Makira: Guardians of Ocean Taboos and the Balance of Souls
November 14, 2025
An illustration of Adaro, human-headed fish-man sea spirit with dorsal horn and tail-fin, traveling along a rainbow above the ocean with flying poisonous fish.

The Adaro are among the most fearsome and enigmatic sea-spirits of Melanesian mythology, originating from the Arosi people of Makira, Solomon Islands. They are traditionally described as human-headed fish-men with a combination of amphibious and demonic features that make them instantly recognizable in folklore. Key physical characteristics include gills positioned behind the ears, a long tail-fin, a dorsal horn, and a spear-like projection emerging from the head. Some ethnographic reports mention glowing or intensely reflective eyes, emphasizing their otherworldly presence.

Their behavior is as unsettling as their form. Adaro are malevolent beings who prey upon humans, particularly fishermen who venture too far from safe waters or fail to observe cultural taboos. They are said to have the power to launch poisonous flying fish at their victims, a supernatural method of punishment that illustrates the Adaro’s close association with both the natural and spiritual realms.

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Adaro are also capable of traversing rainbows and waterspouts, symbolic pathways between the ocean and the sky, which reinforces their liminal status as entities existing between worlds. This movement is not merely fantastical; it underscores the Melanesian understanding of the ocean as a space of moral and spiritual power, where humans must navigate both natural dangers and ancestral oversight.

The term adaro carries dual meaning: it can refer to the monstrous fish-man, but it also signifies a “bad soul” in the broader spiritual lexicon, contrasting with aunga, the “good soul.” This dual usage reflects the Adaro’s role as both literal and symbolic agents of chaos, bridging moral, physical, and supernatural realms.

Ethnographers like Fox and Drew noted that Adaro depictions vary across local communities. In some villages, the emphasis is on monstrous aquatic features, while in others, the spirit-like qualities dominate, suggesting that interpretations were influenced by both local oral traditions and early missionary frameworks. This variance illustrates the rich diversity of Melanesian cosmology, where spiritual beings can embody multiple layers of meaning.

Powers and Abilities

Adaro are more than monstrous fish-men; they are supernatural enforcers of ethical and environmental law. Their known powers include:

  • Poisonous Projectile Attack: Using flying fish imbued with their venom to punish humans.
  • Liminal Travel: Ability to traverse rainbows and waterspouts, moving between human and spiritual realms.
  • Moral Detection: Targeting humans who violate taboos, disrespect offerings, or ignore ancestral guidance.
  • Omnipresence in Oceanic Spaces: Capable of appearing in shallow coastal waters or far at sea, reinforcing the notion that moral vigilance must be constant.

These abilities render Adaro both terrifying and instructive. They are not mindless monsters but embodiments of spiritual justice, teaching communities about the consequences of imbalance between humans and nature.

Cultural Role and Symbolism

In Arosi culture, Adaro serve didactic, cosmological, and ecological functions. They symbolize:

  • Chaos and Danger: Representing the unpredictable and often lethal power of the ocean.
  • Spiritual Retribution: Acting as enforcers of moral and social law, punishing violations of taboos.
  • Interconnectedness of Realms: Their movement along rainbows and waterspouts illustrates the link between human, natural, and spiritual worlds.
  • Balance and Stewardship: By warning against overfishing or disrespect for offerings, they reinforce sustainable practices.
  • Duality of Soul: Through the contrast of adaro and aunga, they highlight the coexistence of good and evil, and the moral choices humans face.

Adaro myths are also performative. Storytelling often occurs near coastal areas, particularly when teaching young fishermen about safe practices and respect for the sea. In these tales, vivid imagery of flying poisonous fish, rainbow-bound spirits, and spear-headed fish-men serve as visual and moral anchors, ensuring the lessons endure across generations.

Anthropological studies also suggest that Adaro myths reflect social cohesion mechanisms. Communities use them to reinforce ethical codes, explain natural hazards, and sustain a shared sense of identity grounded in respect for the ocean. These narratives intertwine mythology, ecology, and ethics, making Adaro more than fantastical beings, they are cultural mirrors of human interaction with the environment.

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Author’s Note

The Adaro exemplify how indigenous mythologies encode environmental awareness, moral instruction, and spiritual cosmology. While they are terrifying in appearance, their deeper significance lies in guiding human behavior and maintaining ecological balance. Early ethnographers like Fox and Drew offer invaluable descriptions, but readers should note the interpretive filters of mission-era collection. Even so, the consistency of Adaro across oral traditions validates their central place in Solomon Islands culture.

Knowledge Check (Q&A)

  1. Q: What distinctive features identify the Adaro in Solomon Islands mythology?
    A: Human-headed fish-man with gills behind the ears, tail-fin, dorsal horn, and spear-like head projection.
  2. Q: How do Adaro move between the ocean and the spiritual world?
    A: They travel along rainbows and waterspouts, symbolic of liminal spaces.
  3. Q: What does the term adaro signify beyond the creature itself?
    A: It denotes a “bad soul,” contrasted with aunga, the good soul.
  4. Q: What types of human behavior provoke Adaro attacks?
    A: Disrespect for taboos, failure to honor offerings, or overexploitation of the sea.
  5. Q: How do Adaro myths teach environmental or moral lessons?
    A: Through stories illustrating consequences for disrespecting the sea and social taboos, promoting ecological stewardship.
  6. Q: What broader cultural and spiritual concepts do Adaro embody?
    A: Chaos, spiritual retribution, liminality, ethical guidance, and the duality of souls.

 

Source: Fox, C. E. & Drew, F. H. , Beliefs and Tales of San Cristoval, Journal of the Anthropological Institute (early 20th century)
Dictionary/anthropology entries referencing Arosi lexical material

Origin: Makira (San Cristoval), Solomon Islands, Melanesia
Recorded c. late 19th – early 20th century; oral tradition older

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