- "I ran into them once when I was a whaler. They may be more beautiful than any woman you have seen, but they are as vicious as a blood-hungry shark! I know. I was the only member of my crew to survive."
- ― Eight-fingers Oba, Heroes of Might and Magic IV, "The Strait of the Lost"
- Merfolk Mimicry
- Merkind Mimicry/Physiology
- Mermaid/man Mimicry/Physiology
- Merpeople Mimicry/Physiology
User with this ability either is or can transform into a merfolk (male or female), a being with the upper body of a humanoid and the lower body (in taur-style) of a sea animal/creature (mainly either that of a fish or cetacean). Some are able to transform completely into humanoid form to move on land and some can split their tail into legs. Others have to find other ways to move while on land.
Merfolk are sometimes depicted as perilous creatures associated with floods, storms, shipwrecks, and drowning. In other folk traditions (or sometimes within the same tradition), they can be benevolent, bestowing boons, teaching or even falling in love with humans.
- According to Japanese legends, eating the flesh of a mermaid may act as Immortality Bestowal, and their other organs/body parts, such as the blood or liver, may have similar and related effects. Understandably, this can have unpleasant side-effects.
- Aquatic Life Communication
- Aquatic Life Manipulation
- Beacon Emission
- Decelerated Aging/Semi-Immortality/Immortality
- Human Disguise
- Musical Empathy
- Siren Song
- Supernatural Beauty
- Water Manipulation
- Weather Manipulation
- May have complications when transitioning from water to air.
- Ability to remain out of water varies: some are completely unable to breathe air and begin immediately suffocate out of water, others are able to breathe air but need to stay wet to avoid drying, and others being able to stay on land for prolonged periods of time with little to no ill effects.
- Scales and skin may dry when overexposed to the Sun or artificial heat, such as fires or heaters.
- May be vulnerable to certain diseases.
- Lack of legs may pose locomotion difficulties on land: some are able to change between legs and fins, others cannot and are stuck with a tail even out of water.
- The "non-changers" vary in their ability to move on land, some can move upright relatively normally walking/hopping on tailfins, others slither upright across land and some have to drag themselves/crawl on ground.
See Also: Our Mermaids Are Different.