20 Historic Maritime Legends That Struck Fear into the Hearts of Sailors Around the World

We’ve all heard of the Kraken, but no one today truly understands the colossal scale attributed to it. The Kraken originates from Scandinavian legend—particularly Norwegian—where it was described as a colossal sea monster lurking off the coast of the North Sea. Sailors believed that its gigantic tentacles could seize a ship, throw the crew overboard, and drag the entire vessel down into the depths. Even when, later on, some linked this tale to sightings of giant squids, no crew was willing to test this theory.

At first glance, this may seem far-fetched, but it is not a real person. No, this ghost ship is part of European maritime legend and is most often associated with the waters near the Cape of Good Hope. Sailors dreaded catching sight of it; its appearance was considered a harbinger of disaster or death.

Cover your ears, friends! The sirens, creatures from Greek mythology, were said to live in the treacherous seas of the West, near the route taken by Odysseus. Their song lured sailors off course and led them to their doom on the reefs. So think twice before letting yourself be seduced by a beautiful woman sitting all alone in the middle of the ocean.

Scylla originates from Greek mythology and was later associated with the Strait of Messina, between Sicily and mainland Italy. Regardless of the version, the story remains the same: she was a multi-headed monster who lurked at the edge of a narrow strait, ready to snatch men right off the deck of a ship. (Those poor guys really had no luck.)

Speaking of Greek mythology, Charybdis also hails from these tales and haunted the waters opposite Scylla, in the Strait of Messina. She was described as a monstrous whirlpool that swallowed up seawater and anything unfortunate enough to be on its surface. In short, if one had to choose between being devoured on one side or being swept underwater on the other, there really was no choice.

The Leviathan originates from Jewish mythology and ancient Middle Eastern traditions, where it is depicted as a primordial monster of the deep—and yes, it is as terrifying as it seems. It embodied the sea in its most ancient, violent, and elusive form to humankind. Once a culture gives the ocean a gigantic name and form, every unexplained disturbance in the dark waters takes on a much more personal dimension.

Tales of sea serpents first appeared throughout the ancient world before spreading widely throughout European and maritime folklore. Of course, a sea serpent doesn’t look like much, but eyewitness accounts described enormous creatures rising out of the water, coiling around ships, or attacking without warning. In short, not exactly a little garden snake. 

We blame Disney for ruining the legend of these terrifying creatures! In European folklore, these beast-women had become powerful and sometimes dangerous sea creatures. They were often said to possess prophetic powers, strange magic, and the ability to lure men away from safety. 

Davy Jones originates from maritime folklore, where he embodies the sea itself in a malevolent form; so we’re already starting off on a terrifying note. To make matters worse, the expression “Davy Jones’s locker” has come to refer to the depths of the ocean—or the grave that awaits those who have perished at sea. This idea has given a face to drowning, which is a typically maritime way of making an already grim thought even more terrifying.

In Norse mythology, Rán was a sea goddess who, using her net, captured sailors and dragged them beneath the waves. This obviously did not please the sailors, many of whom feared her, for drowning ceased to be an accident once it was imagined as a deliberate act committed by a supernatural being. In the waters of the North, where storms could sink a ship in the blink of an eye, this legend took on a disturbing air of credibility.

Jörmungandr, the Midgard Serpent of Norse mythology, was no ordinary monster. No, he was imagined to be so immense that he encircled the world beneath the oceans. The existence of a sea serpent encircling the world suggested that the depths harbored something older and more powerful than the gods or humans. It would seem that ordinary storms were not enough.

The Aspidochelone follows in the tradition of the Physiologus and medieval bestiaries, where it was described as a monstrous sea creature (usually a whale or a turtle). And that’s not all: it was so large that it could be mistaken for an island. Legend had it that men could land on its back, light a fire, and then be swept toward certain death when the creature dived. 

Legends about selkies have their origins in Scottish and Orkney traditions, where half-human, half-seal creatures would shed their skins to take human form. Curiously, sailors viewed them less as aggressors than as a mysterious seafaring people whose world blended with their own. Stories then began to emerge, recounting how people rescued them, harmed them, or even married them—all accompanied by a clear warning: the sea never forgets what you do.

Japanese folklore has never been one to do things by halves, and the Umibōzu proves this right from the start. It takes the form of a huge, dark sea creature that suddenly emerges from calm waters and is said to capsize ships. If it’s feeling particularly mischievous, it might even demand a bucket and then use it to flood the ship. 

Since we’re talking about Japanese legends, we should also tell you about the Funayūrei—those Japanese ship ghosts that are generally the spirits of those who perished at sea. You’d be wise to fear them, just as sailors did; it was believed that these ghosts would approach ships, ask for a ladle, and then use it to drag the living down into the depths with them. At least they asked first.

The Bake-kujira is a ghost whale from Japanese folklore, particularly associated with the coastal areas near Shimane. However, do not think of it as just another whale: it was the bearer of a solemn warning. Its appearance was associated with curses, disasters, fires, and diseases, mainly as a result of whaling. 

Akkorokamui comes from the Ainu tradition of northern Japan; it is described as a gigantic, octopus-like creature associated with Uchiura Bay in Hokkaido. If you had ever spotted it, you wouldn’t have stood a chance. According to legend, it was large enough to swallow boats—or even whales—whole. 

The Caleuche is a legendary ghost ship from the Chiloé Archipelago in southern Chile. It was believed to appear at night, bathed in a brilliant light and accompanied by music, with sorcerers and drowned sailors on board. Together, they brought misfortune upon those who looked too closely at them. 

In maritime tradition, St. Elmo’s fire has become a powerful omen associated with Saint Erasmus, the patron saint of sailors. Sailors both feared and revered it; it would appear on the masts during storms, often accompanied by whistling or crackling sounds. Although it was considered a sign of protection, it nevertheless signaled that the storm had arrived and that you and your crew were right in the middle of it.

The Lusca is part of the maritime folklore of the Bahamas and, more broadly, the Caribbean, particularly around the “blue holes” of Andros Island. It was described either as a huge octopus-like creature or as a monster that was half shark, half octopus. In both cases, it was said to hide in underwater caves and attack anything that came too close.