Dragons in Greek mythology 2.113; Hyginus, Preface to "Fabulae") or of Gaia herself, or in her Olympian manifestation, Hera: "The Dragon which guarded the golden apples was the brother of the Nemean lion" asserted Ptolemy Hephaestion (recorded in his New History V, lost but epitomized in Photius, "Myriobiblion" 190). The Lernaean Hydra was a dragon-like water serpent with fatally venomous breath, blood and fangs, a daughter of Typhon and Echidna. The creature was said to have anywhere between five and 100 heads, although most sources put the number somewhere between seven and nine. For each head cut off, one or two more grew back
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