'Monster' in the Bible

Am I [the] sea, or a sea monster, that you set a guard over me?

On that day, Yahweh will punish with his cruel, great and strong sword Leviathan, [the] fleeing serpent, and Leviathan, [the] twisting serpent, and he will kill the sea monster that [is] in the sea.

Nebuchadnezzar the king of Babylon has devoured me [and] sucked me dry; he has made me an empty vessel; he has swallowed me like the sea monster; he has filled his belly with my delicacies; he has rinsed me.

Speak, and you must say, 'thus says the Lord Yahweh: "Look! I am against you, Pharaoh, king of Egypt, the great sea monster, the [one] lying down in the midst of his Nile streams, who says to me, "[It is] my Nile, and I made [it] [for] myself."

"Son of man, raise a lament over Pharaoh, the king of Egypt, and you must say to him, '[With] a fierce, strong lion among nations you compared yourself, and you [are] like the sea monster in the seas, and you thrash about in your rivers, and you make water turbid with your feet, and you make your rivers muddy.