Sea serpent
Type of dragon described in mythology
A sea serpent is a type of sea monster described in various mythologies and religious texts. Famous sea serpents include: the Mesopotamian Tiamat, Ugaritic Yam and Tannin, Judaic Leviathan and Rahab, ancient Greek Cetus, Echidna, Hydra and Scylla, Vedic Vritra and Surasa, and the Norse Jörmungandr, etc.
From Wikipedia, under CC BY-SA. More on occurri.