Psalms 74:13-14

Leviathan : a twisting aquatic monster, possibly the crocodile of the Nile, and used symbolically of Assyria and Babylonia (by the twisting Euphrates River IBD).

sea : the Dead Sea, at the southern end of the Jordan River,the Mediterranean Sea,the Persian Gulf south east of Babylon,the Red Sea
(33° 14´, 33° 28´); (30° 5´, 31° 13´); (27° 5´, 34° 46´); (31° 32´, 35° 28´); (27° 5´, 34° 46´); (31° 32´, 35° 28´); (31° 1´, 33° 51´)

Isaiah 27:1

Leviathan : a twisting aquatic monster, possibly the crocodile of the Nile, and used symbolically of Assyria and Babylonia (by the twisting Euphrates River IBD).

Revelation 12:9

Satan : a person, male (evil angelic),an angel that has rebelled against God