THE LEVI-ATHAN

Levi-Athan is the Biblical sea monster of enormous dimensions and king of all the sea creatures. It symbolizes the power of the human mind. God created him together with man and man governed his power with loyalty and integrity towards His Creator, in order to maintain his majesty and glory given to him in order to exercise authority over the realms that God trusted to him.
When the woman was deceived by him and since she came from man's mind, corruption enter in man's mind making him vulnerable to the power of Death, losing his divine position in authority over the realms entitled to him. Levi-Athan took control of it, meaning that man became an entity controlled by the monster since he was banned from his original and divine place and became disconnected completely from God's divine power.
God slew the female of the species, to prevent the pair breeding and destroying the world, meaning that the pair didn't take fruit from the Tree of Life, symbolizing eternity, and made clothes for Adam and Eve from her skin. Man and woman became sinners and under the power of Death.
God confounded Job with this monster Levi-Athan, emphasizing his impotence in dealing with its power by asking, "Can you draw out Levi-Athan with a hook?" (Job 41).
In another interpretation of the word, it is rendered as "Dragon" or "Serpent," but as Levi-Athan's home was said to be this great and wide sea (Ps 103-104), it was identified with the great fish or whale in which Jonah spent 3 days and 3 nights, meaning the mind power.
Jonah is said to be the son of certain Amitt-Ai, and there is a tradition that says that his mother was the widow of Sarepta and Elijah restored Jonah, the son of the widow, to life, being revived from death, in order to have authority over the spirit of Death.
God ordered Jonah to go to the City of Nineveh to denounce the wicked ways of the inhabitants. Fearing a hostile reception, since he was afraid that they might indeed repent and thus show up the failings of Israel, Jonah tried to avoid God's command by boarding a ship at Joppa bound for the Phoenician city of Tarsh-Ish where Jonah believed that God's writ did not run.
God raised a tempest and the ship was at the mercy of the sea that tried to brake it in two. To discover who on board had provoked the storm, the sailors cast lots and the lot fell upon Jonah, showing him as the one who was bringing the divine wrath. Jonah told them to appease the divine wrath by throwing him overboard.
As he fell into the sea he was swallowed up by a large fish, whose eyes were a big as windows and whose stomach was lit up by the glow from a precious stone. The fish was in danger of being eaten by the Levi-Athan, but Jonah scared this sea monster off by announcing that in the age of the Messiah the monster would be eaten at the Messianic Banquet. He spent in the belly of the sea monster 3 days and 3 nights. Typologically this symbolizes both the entombment of Jesus and the Descent into the Land of the Dead, a parallel made by Jesus himself :"For as Jonas was 3 days and 3 nights in the heart of the earth" ... (Matthew 12).
Jonah then prayed to God who spoke to the sea creature and it vomited out Jonah upon the dry land. This is both a symbol of the Resurrection and of the Salvation of the individual believer.
Chastened, Jonah carried out God's originally  instructions. He went to Nineveh and preached so eloquently against their evil ways that the inhabitants repented. God then did not punish them as He had intended.
This angered Jonah, and he built a shelter for himself outside the city and sat in its shade. God caused a gourd plant to grow up to give him additional protection from the sun and this pleased Jonah. That night God prepared a worm which attacked the plant and it withered the next morning. Jonah was sorry for the gourd, and God used this as a lesson that he must have true compassion for all men, just as God had had pity for Nineveh that great city, wherein were a great amount of people that cannot discern between their right hand and their left hand; and also much cattle. Jonah was also taught that true compassion extends also to Gentiles and to the animal world.
God will eventually have the Levi-Athan slay in the age of the Messiah or according to another version, arrange for the gigantic Beh-Emoth to engage in battle with the Levi-Athan until they kill each other.
At the great Messianic banquet for the righteous, the Levi-Athan's skin will form a gigantic marquee and its flesh will be eaten, and in that way, things will be returned toward the way it was, and we will have a new heaven and a new earth for us that believe in God's Truth.