Vaporeon

Tests show that its cells closely resemble water molecules, which perhaps explains its ability to conceal its form while submerged. I believe the origins of mermaid folklore lie with this Pokémon.

Lives close to water. Its long tail is ridged with a fin which is often mistaken for a mermaid’s.

Its cell structure is similar to water molecules. It melts into the water and becomes invisible.

When Vaporeon’s fins begin to vibrate, it is a sign that rain will come within a few hours.

It prefers beautiful shores. With cells similar to water molecules, it could melt in water.

As it uses the fins on the tip of its tail to swim, it blends with the water perfectly.

Vaporeon underwent a spontaneous mutation and grew fins and gills that allow it to live underwater. This Pokémon has the ability to freely control water.

Its body’s cellular structure is similar to the molecular composition of water. It can melt invisibly in water.

It has evolved to be suitable for an aquatic life. It can invisibly melt away into water.

Its cells are composed of units much like water molecules. It lives close to water and is often mistaken for a mermaid.

Blending in with the water and erasing all signs of its presence, it patiently waits for its prey, fish Pokémon.

Clean, clear waters are its usual habitat. When it’s about to be attacked by an invading enemy, it dives into the water to hide.

Tests show that its cells closely resemble water molecules, which perhaps explains its ability to conceal its form while submerged. I believe the origins of mermaid folklore lie with this Pokémon.