What Are the Strangest Islands on Earth That Should Not Exist?

The strangest islands on Earth include Ball’s Pyramid, Surtsey, Ferdinandea, and Bouvet Island — four places so geologically bizarre, ecologically improbable, or historically inexplicable that scientists and historians have spent lifetimes trying to account for them.

Ball’s Pyramid: The Razor-Sharp Rock That Hid a Ghost Species

Rising 562 metres out of the Tasman Sea off the coast of Australia, Ball’s Pyramid is the tallest volcanic sea stack on the planet — a near-vertical blade of ancient rock that looks less like a landmass and more like a mistake. For most of its recorded history, scientists considered it barren. The conditions make it nearly uninhabitable: constant wind, relentless sea spray, almost no soil, and ledges barely wide enough to stand on.

In 2001, that assumption collapsed. A research team climbing the stack discovered living Lord Howe Island stick insects sheltering beneath a single Melaleuca shrub on a ledge roughly 100 metres above the ocean. The species had been declared extinct since around 1920 — gone for eighty years — and here it was, clinging to existence on one of the most hostile rocks in the Southern Hemisphere. The entire surviving wild population numbered approximately twenty-four individuals. Twenty-four insects representing the complete genetic legacy of a species that the scientific community had already written off and mourned.

A captive breeding program was immediately initiated, and the population has since grown to thousands of individuals held in facilities around the world. But the question that no researcher has been able to answer definitively remains: how did an insect species survive undetected for eight decades on an exposed volcanic spire in the open ocean with virtually no resources? The Lord Howe Island stick insect — sometimes called the tree lobster for its size and appearance — is now one of the most dramatic examples of a Lazarus species: an organism rediscovered after being presumed extinct.

Surtsey: A Country Born From Fire in 1963

On 14 November 1963, a cook aboard an Icelandic fishing trawler saw what he believed was his boat on fire. It was not. What he was witnessing was a volcanic eruption breaking through the floor of the North Atlantic from a depth of 130 metres below the surface. Within days, a new island had emerged from the ocean. Scientists named it Surtsey, after Surtr — the fire giant of Norse mythology — and the world had a front-row seat to something that had never been scientifically documented in the modern era: the birth of a landmass from nothing.

Surtsey reached its maximum size of approximately 2.7 square kilometres by 1967. Ocean erosion has reduced it significantly since then, but what it gave science is permanent and irreplaceable. Researchers had the unprecedented opportunity to observe ecological colonisation from absolute zero — no soil, no seeds, no insects, no bacteria. Just hot black basalt and ocean spray. Within years, birds had arrived. Seeds blown in from the Icelandic mainland took hold. Bacteria, mosses, and fungi followed in sequence. The island became a living laboratory for understanding how life reclaims barren land, and in 2008 UNESCO designated Surtsey a World Heritage Site for exactly that reason. Access is now strictly limited to authorised researchers to preserve its scientific value.

Ferdinandea: The Phantom Island That Nearly Started a War

In the summer of 1831, a submarine volcano in the Strait of Sicily — roughly halfway between Sicily and Tunisia — broke the surface of the Mediterranean and began to grow. Within weeks, it had risen to approximately 65 metres above sea level and extended across several hundred metres of ocean surface. The island was named Ferdinandea, and its existence triggered one of the more absurd geopolitical crises in European history.

Four powers descended on the island almost simultaneously: Britain, France, Spain, and the Kingdom of the Two Sicilies each planted flags and filed formal territorial claims. Warships were dispatched. Diplomatic correspondence grew increasingly urgent. An international standoff was building over a heap of volcanic rock barely the size of a few city blocks in the middle of the Mediterranean — and then, before any of the four claimants could resolve anything, the island sank. Wave erosion had dissolved it back beneath the surface within months of its appearance. The warships returned home. The diplomats had nothing left to argue over.

But Ferdinandea was not finished. The submarine volcano has shown signs of renewed unrest multiple times since 1831, and today the island’s summit sits only six to eight metres beneath the Mediterranean surface — less than the height of a two-storey building separating a potential international crisis from the seafloor. If the volcano becomes active again, the territorial dispute technically remains unresolved. Italy preemptively placed a plaque on the submerged summit in 2000, partly as a political claim and partly out of sheer precaution.

Bouvet Island: The Lifeboat at the End of the World

Bouvet Island is, by almost every measurable standard, the most remote island on Earth. Norwegian territory in the South Atlantic, it sits more than 1,600 kilometres from the nearest inhabited land. Ninety-three percent of its surface is covered by glacier. There are no permanent residents and almost no reason for any vessel to be in its waters under normal circumstances. The weather is brutal — ice, fog, sustained storms, and ocean swells capable of capsizing most small craft.

In April 1964, a Royal Navy survey team arrived to chart the island and found something that had no business being there: an intact lifeboat, sitting on the rock, apparently seaworthy, containing oars and a flotation drum. It was completely empty. No crew. No survivors. No distress signals had been received. No shipwreck was visible anywhere in the surrounding ocean. No vessel was reported missing in those waters around the relevant time period.

The lifeboat has never been conclusively identified. Its origin, the fate of whoever crewed it, and how it came to rest on one of the only flat ledges available on the world’s most isolated island have never been explained. The mystery has attracted serious investigative attention over the decades and remains genuinely open. In a place this remote — where the presence of any human artifact is almost statistically impossible — the appearance of an abandoned, ownerless lifeboat with no associated wreck is one of the most unsettling unexplained events in modern maritime history.

What These Four Islands Share

Ball’s Pyramid, Surtsey, Ferdinandea, and Bouvet Island are separated by thousands of kilometres and represent entirely different categories of strangeness — ecological, geological, geopolitical, and historical. But they share something fundamental: each one is a reminder that the Earth is not a fully solved or fully stable system. It is still erupting, still submerging, still concealing species that science had declared lost, and still generating events that resist explanation. These are not historical curiosities. Ferdinandea could resurface this decade. The Lord Howe Island stick insect is still being bred in captivity as its native island attempts a managed reintroduction. Surtsey is still being studied. And the lifeboat on Bouvet Island still has no owner.