Sea Monsters in the Age of Exploration - Download Lesson

Kraken

Rendering of a Sea Monster

The Mysterious Oceans and the Birth of Legends

In the Age of Exploration, the world’s oceans were mysterious and endless. Sailors told stories of boiling salt water near the equator and fearsome sea life. As these stories were repeated from crew to crew and ship to ship, the creatures grew stranger, larger, and more terrifying. The farther sailors traveled from home, the more their imaginations filled the unknown with danger. These tales helped explain the powerful waves, gigantic shadows beneath the water, and strange animals they sometimes glimpsed. Today, one of the most famous legends from this era continues to appear in movies, novels, and video games — the fearsome kraken.

The Legend of the Kraken

The legend of this colossal, crew-eating, ship-sinking monster came from the wide bays and icy waters of Scandinavia. Although the kraken was described as a terrifying beast of unimaginable size, the legend was likely inspired by a real animal: the giant squid. The squid itself can reach impressive lengths, but the kraken of sailor tales grew to island-like proportions.

The kraken was first described as a giant squid in Erik Pontoppidan’s The First Attempt at a Natural History of Norway (1752). In this book, Pontoppidan wrote that the kraken was so enormous that sailors sometimes mistook it for an island. Even more dangerously, he claimed that the creature created a massive whirlpool when it sank, strong enough to drag ships down with it. Although Pontoppidan insisted that the kraken preferred eating fish over people, he admitted that with its long arms, the creature could easily pull even the largest warships to the bottom of the sea.

The Kraken in Books and Movies

Pontoppidan’s description sparked the imagination of later authors and storytellers. In the famous novel Twenty Thousand Leagues Under the Sea, Jules Verne describes a terrifying battle between Captain Nemo’s submarine and a kraken. Verne writes that the monster “could entangle a ship of five thousand tons and bury it into the abyss of the ocean.” In modern times, the kraken continues to capture people’s imaginations. In Pirates of the Caribbean: Dead Man’s Chest, the kraken serves as a servant of Davy Jones. Jones would summon the beast with a massive hammer that sent shockwaves through the sea, calling the kraken to drag ships beneath the waves and capture their crews as slaves.

Other Sea Monsters of the Age of Exploration

The kraken was not the only legendary beast sailors feared. The oceans of the 1400s–1700s were said to be filled with all sorts of monsters. Some explorers told stories of enormous sea serpents that twisted like snakes across the water’s surface. Others claimed to see giant whales so huge that sailors mistook them for islands, or massive turtles capable of dragging ships off course. In northern waters, some sailors described the “sea bishop,” a human-shaped fish with a pointed head, while others believed in mermaids who sang sailors to their doom. These creatures were often exaggerations of real animals — whales, manatees, sharks, or squids — but to frightened sailors far from home, every odd sight in the water became a new legend.

Sea Bishop

Rendering of the Sea Bishop

Carta Marina

Carta Marina Map (1539) - Famous for its variety of sea monsters.

Discussion Questions

  1. Why did sailors tell stories about sea monsters during long voyages?
  2. How might real animals, like whales or squids, have inspired myths about giant creatures?
  3. Why do you think the kraken became such a popular legend around the world?
  4. What similarities do you notice between older sea monster stories and modern movies or books?

Glossary

  • Kraken – A legendary giant sea monster often described as a huge squid or octopus.
  • Myth – A traditional story that explains beliefs, fears, or natural events.
  • Giant squid – A real deep-sea animal that can grow extremely long and may have inspired kraken stories.
  • Whirlpool – A powerful spinning current of water.
  • Exaggeration – Making something seem larger, scarier, or more extreme than it truly is.

Sea Monsters and Sailors

In the Age of Exploration, sailors traveled across oceans they did not understand. They saw strange animals, big waves, and shadows in the deep water. To explain these things, they told stories about sea monsters.

The Kraken

One of the scariest legends was the kraken, believed to live near Scandinavia. Sailors said it was so big that it looked like an island. Today we know the story probably came from the giant squid, a real deep-sea creature.

Writers used the kraken in stories like Twenty Thousand Leagues Under the Sea, and movies like Pirates of the Caribbean made the monster even more famous.

Other Sea Monsters

Sailors also talked about sea serpents, giant whales, huge turtles, and mermaids. Many of these creatures were based on real animals but were changed and exaggerated in the stories.

Make Your Own Old-School Explorers Map

Students design their own parchment-style explorer maps by painting or filling regions, placing period-style stamps (galleons, whales, compass roses, wind cherubs, and more), and adding Latin labels inside ornate gold cartouches. They can switch between classic map backgrounds, pan/zoom the stage, adjust colors and sizes, and refine work with select, undo/redo, and erase tools before exporting a finished PNG. The activity blends geography and history with creative design, encouraging learners to think like early cartographers while building visually rich maps.


Sea Monster Shuffle

Sea Monster Shuffle

In Sea Monster Shuffle, students choose a sea monster and race it toward an exploration ship by answering multiple-choice questions about the Age of Exploration. Each correct answer pulls their monster closer to the ship, while wrong or timed-out answers give the rival monsters a chance to surge ahead. When a monster reaches the ship, an animated sinking scene plays, and students receive a detailed score report showing their accuracy and which questions they missed.
Sea Monsters Activities