Runan-Shah, the merman of the Caspian

Loch Ness has its monster, the Orkneys have selkies, Feejee has its mermaid. And the Caspian Sea has Runan-shah, a cryto-humanoid that sounds somewhat like the classic Creature From the Black Lagoon:

All the eyewitness accounts provide a similar description of the marine humanoid. His height is 165-168 cm, he has a strong build, a protruding ctenoid stomach, his feet are pinniped and he has four webbed fingers on either of his hands. His skin is of moonlight color. The hair on his head looks black and green. His arms and legs are shorter and heavier than those of a medium-built person. Apart from his fingernails, he has nails growing on the tip of his aquiline nose that look like a dolphin's beak. No information as to his ears. His eyes are large and orbicular. The mouth of the creature is fairly large, his upper jaw is prognathic and his lower lip flows smoothly into the neck, his chin is missing.

This creature has been seen repeatedly by Caspian fishermen from Iran and Azerbaijan over the past few years. They speculate that he is one of a family of mermen on a mission to tackle the environmental problems of the Caspian sea.