Longwang/Long Wang

The Longwang is a notable dragon from Chinese myth. He has a human body and a dragon head. The term can also refer to the four Dragon Kings Ao Ch’in, Ao Ju, Ao Kuang, and Ao Shun. He has amassed a massive hoard of treasure built up from the countless junk ships sunk by him over the years. Specific to its treasure trove are gems resembling large fish eyes, and people from the Juanch’eng district believe that a fish washing ashore without eyes are victims of the Longwang. 

Citations:

Bane, Theresa. Encyclopedia of Beasts and Monsters in Myth, Legend and Folklore. United States, McFarland, Incorporated, Publishers, 2016.