Chinese mythology merely fantastic types of the bestiary sort. Sometimes the dragon is considered part of this category, related to it, or the ruler of all the swimming and crawling folk. This may include the giant marine turtle or tortoise Ao, the Bashe snake reputed to swallow elephants, a nine-headed snake monster reminiscent of the hydra known as Xiangliu, and the White Serpent from the novel "Legend of the White Snake". Various birds are found in Chinese mythology, some of them obviously based on real birds, other ones obviously not, and some in-between. The Crane is an example of a real type
Snakes in mythology in Nordic myth. Sea monsters lived in every ocean from the seven-headed crocodile-serpent Leviathan of Hebrew myth to the sea-god Koloowisi of the Zuni people of North America and the Greek monster Scylla with twelve snake-necks. In some cultures, eels (which spend their early lives in freshwater before returning to the sea as adults) were regarded as magical creatures. Rivers and lakes often had snake-gods or snake-guardians including Untekhi the fearsome water-spirit of the Missouri River. Until recently, some northern European communities held well dressing ceremonies to appease the snake-spirits which lived in village wells and told legends of saints