There is a giant sea snake. 

A huge sea snake lives in the ocean. 
The snake is a child of Loki. It was tossed into the deep sea. There, it grew to a giant size.
Thor is a god who fights the snake. Once, Thor tried to lift it. The snake was hidden as a big cat.
Thor also went on a fishing trip. He used a large ox head for bait. 
One day, the snake will let go of its tail. This will be a sign of a big change. People tell many stories about this snake.
In Norse myths, a giant sea serpent lives in the ocean. 
Jörmungandr is a child of the god Loki. The god Odin took the serpent and threw it into the sea. There, it grew to a massive size. This serpent is the enemy of the god Thor. They have a long history of fighting.
One story says Thor tried to lift the serpent. It was hidden by magic to look like a huge cat. 
Many people believe a big event called Ragnarök is coming. One sign is when the serpent lets go of its tail. The sea will flood and the serpent will move onto land. In the end, Thor and the serpent will fight a final battle. They will both die during this fight.
In Norse mythology, there is a creature called Jörmungandr. 

Jörmungandr is part of a famous family. It is the middle child of the god Loki and the giant Angrboða. The god Odin took Loki's three children away from the world of the Æsir. These children were the wolf Fenrir, the ruler Hel, and the serpent Jörmungandr. Odin tossed the serpent into the great ocean around Midgard. The serpent grew and grew in the deep water. Eventually, it became large enough to surround the whole world.
The thunder god Thor is the main enemy of the serpent. They have a very long history of fighting each other. In one story, Thor tried to lift a huge cat. This cat was actually the serpent disguised by magic. 
People in the past carved stories of these battles into stone. The Altuna Runestone and the Ardre VIII stone show these myths. These stones date back to the 8th or 10th century. They show that people told these stories for hundreds of years. One version of the myth says Thor killed the serpent. Other versions say the giant cut the fishing line. This allowed the serpent to sink back into the sea. These ancient carvings help us understand how the myths were shared.
All these stories lead to a final event called Ragnarök. One sign of this event is when the serpent lets go of its tail. The sea will flood and the serpent will move onto land. It will spray poison into the air and the water. Thor and Jörmungandr will meet for a final battle on a plain called Vigrid. Thor will kill the serpent, but he will also die. He will fall after walking nine paces because of the serpent's venom. 
Jörmungandr is a monstrous sea serpent from Norse mythology. 
The serpent's origins are linked to the gods and giants. Jörmungandr is the middle child of the god Loki and the jötunn Angrboða. Loki and Angrboða had three famous children. These were the wolf Fenrir, the ruler of the underworld Hel, and Jörmungandr. The god Odin took these three children away from the world of the Æsir. He tossed the serpent into the great ocean surrounding Midgard. In the deep water, the serpent grew until it could grasp its own tail.
The name Jörmungandr has deep linguistic roots in Old Norse. The name is a poetic title made of two parts. The prefix "jǫrmun-" means something huge, vast, or superhuman. Some think it relates to the word for the vastness of the world. The suffix "gandr" can mean many things. It can refer to a snake, a river, or even a supernatural being. Because of this, the name can mean the "world serpent" or the "world river." It might even mean the "world bind," representing the circle of life.
The thunder god Thor is the archenemy of Jörmungandr. They have a long history of conflict through several famous myths. In one tale, Thor visited the jötunn king Útgarða-Loki. The king challenged Thor's strength by asking him to lift a huge cat. This cat was actually Jörmungandr disguised by magic. 
Another famous myth involves a fishing trip with the jötunn Hymir. Thor used the head of a large ox as bait on a strong line. 
Archaeologists have found several ancient depictions of these myths. The Altuna Runestone and the Ardre VIII stone in Sweden are important examples. The Ardre VIII stone likely dates from the 8th to the 10th century. These carvings show that the stories remained mostly unchanged for hundreds of years. They were recorded in the Prose Edda around the year 1220. These artifacts prove how deeply the serpent was woven into Viking Age culture. They also show how myths were passed down through visual art.
All these stories lead to the final event called Ragnarök. One sign of this event is when Jörmungandr releases its tail. The sea will flood as the serpent thrashes onto the land. The serpent will spray deadly venom into the air and the water. 
Scholars have studied Jörmungandr to find connections to other cultures. Some see similarities between Thor's fishing trip and the Hindu god Indra. Indra fights a dragon named Vritra in Vedic mythology. Other thinkers suggest the stories represent the balance of the cosmos. The serpent's role is to maintain the order of the world's edges. Even today, the name appears in modern culture. An asteroid, 471926 Jörmungandr, was named after the serpent in 2018. The creature also appears in modern video games like God of War.
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