Here is a list of mythical creatures beginning with this letter and I am constantly gathering information from each continent and continually updating.
Apkallu (Sumerian)
His entire body was that of a fish, but he had another head, presumably human, and feet like a man as well as a fish tail. He taught men to write, as well as many other arts, crafts, and institu- tions of civilization. He taught them to build cities and temples, to have laws, to till the land, and to harvest crops.
He taught men to write, as well as many other arts, crafts, and institutions of civilization. He taught them to build cities and temples, to have laws, to till the land, and to harvest crops. At sunset he returned to the sea. Later there were other similar creatures who appeared on the earth.