'Sea monster' in the Bible

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

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,”