'Monster' in the Bible

Am I the sea or a sea monster,that You keep me under guard?

On that day the Lord with His harsh, great, and strong sword, will bring judgment on Leviathan, the fleeing serpent—Leviathan, the twisting serpent. He will slay the monster that is in the sea.

Wake up, wake up!Put on the strength of the Lord’s power.Wake up as in days past,as in generations of long ago.Wasn’t it You who hacked Rahab to pieces,who pierced the sea monster?

“Nebuchadnezzar of Babylon has devoured me;he has crushed me.He has set me aside like an empty dish;he has swallowed me like a sea monster;he filled his belly with my delicacies;he has vomited me out,”

“Son of man, lament for Pharaoh king of Egypt and say to him:You compare yourself to a lion of the nations,but you are like a monster in the seas.You thrash about in your rivers,churn up the waters with your feet,and muddy the rivers.”