Leviathan (theology)

Leviathan is a gigantic sea-monster of Biblical lore and also one of the seven princes of Hell in demonology as well as the gatekeeper (taking the form of the "Hellmouth").

Leviathan is one of the three Beasts of the earth, specifically being the beast of the ocean - with Behemoth being the beast of the land and Ziz being the beast of the air.

Leviathan has become associated with any large and frightening sea-creature in legend - such as the sea-serpent or fictional whales (as mentioned in Moby Dick).