Half-sea elf

A half–sea elf was the offspring of one human parent and one sea elf parent.

Description
A half–sea elf generally had a pale-green skin, human-like hair with shades of blue or green, and human eye colors, with a thin membrane between their fingers that made them great swimmers. They could see in low-light conditions thanks to their low-light vision.

Personality
They often seemed distant or absent, as if they were listening to or imagining the sound of the sea. They also had a dreamy personality without developing any bitter behavior.

Society
Half–sea elves were most commonly encountered in coastal lands or along rivers. Even if they were not able to breathe underwater, they always felt a strong attraction toward the sea.

They were forced by their abilities to stay with their human parent and were cut off from their elven family.

History
Half–sea elves didn't have a proper history as there were not enough of them to build communities. A half–sea elf would be unlikely to meet someone of their own species during their entire life.