Since the age of sailing, countless adventurers have braved the seas in search of new lands, fortune, and hope. Yet alongside them prowled those whose sole aim was plunder and destruction—pirates. The 10 unsolved pirate mysteries we explore below showcase the ruthless nature of these sea bandits, who reigned from the 17th to early 18th centuries before naval power finally quelled their reign.
10 Unsolved Pirate Mysteries Overview
10. The Ghost Ship Of Topsail Island
A classic ploy among pirate crews around Topsail Island involved lurking in the cove, waiting for a merchant ship to appear on the horizon, then giving chase and seizing its cargo. The tactic thrived in the early 1700s because traffic through the island was heavy. The most notorious practitioner was Edward Teach—better known as Blackbeard—a towering 183‑centimetre (6‑foot) figure famed for his blend of physical might and psychological terror. Legend has it that he would weave cannon fuses or sulfur matches into his beard during battle, a grisly display meant to frighten opponents and prove his fearlessness.
The lingering enigma, however, is the occasional apparition of Blackbeard’s vessel. Sailors claim that, when navigating Rich’s Inlet with radar, a solitary blip can materialise inside a hidden cove. Scanning the area reveals nothing, yet as the ship passes, the phantom blip drifts toward the vessel, accelerating dramatically—mirroring the legendary pursuit of Blackbeard’s own ship centuries ago.
9. The Treasure Of Oak Island
A modest island off Nova Scotia’s coast—Oak Island—has become synonymous with a centuries‑old pirate riddle. In 1795, Daniel McGinnis stumbled upon a deep, unnatural depression while traversing the island. Digging revealed layers of oak planks spaced roughly three metres (ten feet) apart. Beneath successive planked strata lay a stone slab etched with cryptic symbols that appear to describe a massive cache hidden deep underground. When excavators finally breached a lower layer, the cavity flooded, turning the pit into a watery grave and ending countless attempts to reach its bottom.
To this day, the pit’s contents remain a mystery, likely forever concealed. Many suspect the hoard belongs to Captain William Kidd, who famously boasted that his wealth lay “where none but Satan and myself can find it.” The sheer engineering feat required to seal such treasure has baffled modern explorers, leaving the true nature of Oak Island’s buried riches a tantalising enigma.
8. Murder At Sea
In 2014 a chilling video surfaced showing four unidentified men—some speculate they were pirates, others fishermen—clinging to the wreck of an overturned vessel. Their arms are raised in surrender, yet the ship’s crew opens fire, while a speaker blares “Shoot! Shoot! Shoot!” The attackers cackle as they pick off the victims one by one, eventually posing for photographs on deck after the final man falls.
The men’s identities remain unknown, and the footage’s origin adds to the mystery: it was found on a mobile phone abandoned in a taxi. Despite numerous witnesses, no one has stepped forward, underscoring how a brutal murder at sea can slip through the cracks of justice.
7. The Kraken
To most, the notion of a colossal squid capable of crushing ships sounds like pure fantasy. Yet the legend may hold a grain of truth. Paleontologist Mark McMenamin examined the fossilized remains of a 14‑metre (46‑foot) ichthyosaur and observed that the bones were arranged in a pattern reminiscent of how octopuses sometimes organize skeletal material. The high‑pressure signatures suggest the creature responsible dwelled in the ocean’s abyssal zones.
McMenamin also uncovered a fossilized segment of a giant octopus’s beak, lending further credence to the possibility of a massive, deep‑sea cephalopod. While the kraken’s mythos is undeniably entertaining, scientific evidence for its existence remains inconclusive, leaving the monster’s true nature shrouded in speculation.
Whether born of drunken sailor tales or genuine encounters with a gigantic marine predator, the kraken continues to loom in pirate folklore as a symbol of the unknown perils that haunt the deep.
6. The Cryptogram Of Olivier Levasseur
In the waning years of the 18th century, pirate captain Olivier Levasseur—also called La Buse—roamed the Indian Ocean, amassing a staggering haul of loot. Captured and sentenced to hang, Levasseur allegedly uttered his final words, “Find my treasure, the one who may understand it,” before tossing a cryptogram into the gathered crowd.
Decades later, English treasure‑hunter Reginald Herbert Cruise‑Wilkins claimed to have cracked the puzzle, insisting the prize lay on the island of Mahé and was worth roughly £100 million. Earlier, Cruise‑Wilkins had unearthed several pirate statues, which he believed encoded a map to the hidden fortune.
He eventually located a cave he thought held the treasure, undertaking massive engineering work to keep the sea from flooding it. Inside, a rockslide nearly claimed his life, yet he escaped with a flintlock pistol, carved figurines, a 17th‑century wine jug, and a few coins—tangible proof that something valuable was indeed there. Without further funding, however, the quest stalled, leaving Levasseur’s treasure forever locked in mystery.
5. Pirate Utopia
Legend tells of a pirate republic named Libertalia, perched on a tiny island off Madagascar. Founded in the late 1600s by captain James Misson, the enclave allegedly attracted famed buccaneers Henry Avery and Thomas Tew—the latter serving as admiral of Libertalia’s fleet.
The settlement purportedly embraced socialist principles: food and resources were shared, all voices heard, and laws crafted collectively. Flying a white banner in defiance of the traditional Jolly Roger, the pirates championed “for God and liberty,” opposed slavery, and freed any enslaved individuals they encountered, granting them equal status and the right to join the community.
According to Charles Johnson’s A General History of the Pyrates, Libertalia boasted a fort, bustling market, and residential quarters, complete with great halls, places of worship, and taverns. The pirates, renouncing national allegiances, called themselves “Liberi” and even devised a unique language. The utopia’s downfall came when Thomas Tew was stranded, leaving the settlement defenseless; Misson and forty‑five companions escaped, never to return.
4. The Green Flash
For centuries sailors—especially pirates—have reported a fleeting phenomenon known as the green flash. When the sky and horizon are perfectly clear at sunset, a sudden burst of emerald‑green light can streak across the western horizon.
Accounts of the flash date back to the 1600s, with pirates providing the most frequent testimonies due to their long voyages. Although science explains the event as a refraction effect, pirate lore claims that anyone who witnesses the flash gains the uncanny ability to read the souls of others.
3. The Ghost In The Cave
In 2015, businessman John Dyer was holidaying in Cornwall, England, when he snapped a photo of a darkened cave. Reviewing the images later, he noticed a shadowy figure lurking toward the back of the shot. Locals claim the specter is the ghost of notorious pirate William Wilcox, who reportedly fled to the area, hid in the cave, and perished when rising tides trapped and drowned him.
While skeptics argue the shape is merely a rock formation resembling a human, many residents remain convinced they captured the lingering presence of Wilcox, a story passed down through generations of Cornish folklore.
2. Pirate Tunnels
Beneath Savannah, Georgia, a labyrinth of underground tunnels is rumored to have served pirate crews as secret passages for smuggling stolen loot and kidnapped sailors. Legend holds that a hidden tunnel somewhere in the maze leads directly to a dock where small rowing boats waited for the contraband.
One story points to a passage from the historic “Pirates’ House” that once opened straight onto the river, now sealed off after a rock collapse. Some historians also propose that the Sons of Liberty used the same subterranean network for clandestine meetings. Whether employed by pirates or revolutionary societies, the tunnels remain an eerie testament to covert coastal activity.
1. Lake Of Bones
Long Island’s Lake Ronkonkoma is famed for its macabre legends. Some say the lake once connected to the sea via a hidden inlet, allowing pirates to slip in, stash treasure, and execute prisoners. Supposedly, the lake’s bottom hides a network of caves brimming with buried loot left by those seafaring raiders centuries ago.
Local folklore also claims the waters conceal countless skeletons of pirate victims, with occasional reports of bodies being pulled from the depths. Though no concrete evidence validates these tales, the stories persist, hinting that the skeletal remains could point to a hidden trove beneath the lake’s murky surface.
While many pirate mysteries lack definitive proof, their allure endures, inviting speculation and daring exploration. Perhaps one day a fortunate seeker will unlock the secrets that have long haunted these watery graves.
I’m Joe, a freelance writer and author with an interest in unexplained mysteries.