More on Sesha from Infoplease:

• Sesha - Sesha King of the serpent race, on which Vishnu reclines on the primeval waters. It has a thousand ...
• Naga - Naga Serpents; the king of them is Sesha, the sacred serpent of Vishnu. (Hindu mythology.) Source: ...
• Dictionary of Phrase and Fable: S - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "S"