Palulukon from Hopi Native American Mythology, holding up the world. © Donna Quinn.
Palulukon is a class of water serpent to the Hopi of North America.  Palulukon are master of nature, and poor treatment of them can result in any number of natural disasters, including earthquakes,  floods, and lighting storms. 
It is believed that the Earth rests upon the backs of two Palulukon that float in the Cosmic Ocean.  When they become tired, or when other Palulukon are mistreated, the two Palulukon that hold up the world roll over, causing earthquakes and sometimes stopping the water from springs. 
The Palulokon are considered Great Serpents, similar to or related to the Koloowisi of the Zuni of North America. 
For more information on footnotes and references, please see the bibliography.