The Adaro were malevolent merman

Merman

Mermen are mythical male equivalents of mermaids – legendary creatures who have the form of a human from the waist up and are fish-like from the waist down.-Mythology:...

-like sea spirits found in the mythology of the Solomon Islands

Solomon Islands

Solomon Islands is a sovereign state in Oceania, east of Papua New Guinea, consisting of nearly one thousand islands. It covers a land mass of . The capital, Honiara, is located on the island of Guadalcanal...

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Said to arise from the wicked part of a person's spirit, an adaro is described as a man with gills behind his ears, tail fins for feet, a horn like a shark

Shark

Sharks are a type of fish with a full cartilaginous skeleton and a highly streamlined body. The earliest known sharks date from more than 420 million years ago....

's dorsal fin, and a swordfish

Swordfish

Swordfish , also known as broadbill in some countries, are large, highly migratory, predatory fish characterized by a long, flat bill. They are a popular sport fish of the billfish category, though elusive. Swordfish are elongated, round-bodied, and lose all teeth and scales by adulthood...

 or sawfish

Sawfish

Sawfish, also known as the Carpenter Shark, are a family of rays, characterized by a long, toothy nose extension snout. Several species can grow to approximately . The family as a whole is largely unknown and little studied...

-like spear growing out of his head. Adaros live in the sun

Sun

The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

 and travel to and from Earth by sliding along rainbows. Unlike the renowned mermaid

Mermaid

A mermaid is a mythological aquatic creature with a female human head, arms, and torso and the tail of a fish. A male version of a mermaid is known as a "merman" and in general both males and females are known as "merfolk"...

, they are dangerous to humans and can kill them by travelling along rainbows and shooting them with poisonous flying fish. They may also travel in waterspout

Waterspout

A waterspout is an intense columnar vortex that occurs over a body of water and is connected to a cumuliform cloud. In the common form, it is a non-supercell tornado over water. While it is often weaker than most of its land counterparts, stronger versions spawned by mesocyclones do occur...

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