The ocean’s strangest shark filmed alive for the first time at a depth of nearly 6,600 feet

The depths of the world’s oceans continue to surprise scientists. For the first time, researchers have successfully observed live goblin sharks swimming freely in their natural environment deep beneath the ocean’s surface.

The observations, made by an international team of researchers and published in the Journal of Fish Biology, provide unprecedented insights into one of the ocean’s most mysterious and least understood shark species.

The goblin shark’s extreme habitat has long prevented scientists from learning much about it. Its unusual anatomy and elusive nature have kept it largely hidden from researchers.

Now, these rare encounters have shed new light on one of the ocean’s greatest mysteries. For the first time, scientists have watched these ancient predators swimming undisturbed in the deep sea, far from any human presence.

A mystery of the deep

Since its discovery in the late 19th century, the goblin shark (Mitsukurina owstoni) has fascinated scientists because of its unique anatomy.

Its most recognizable feature is a long, flattened snout. Beneath it lies a remarkable jaw that can rapidly extend forward to capture prey, including fish, squid, and small crustaceans, food sources that are often scarce in the deep ocean.

Until now, the shark’s extreme habitat had prevented scientists from observing it alive in the wild. Nearly everything researchers knew came from specimens that had been accidentally caught in commercial fishing nets. Because these sharks were brought rapidly to the surface, the sudden drop in pressure caused them to die before they could be studied alive.

The goblin shark is also notable for its ancient lineage. Often described as a “living fossil,” the species dates back approximately 125 million years to the Cretaceous Period, when dinosaurs dominated the Earth. It has survived mass extinction events and continued to thrive in the deep ocean, largely untouched by human activity.

Two unprecedented sightings

The first sighting was discovered almost by accident after researchers reviewed archived footage collected by a remotely operated vehicle during an earlier deep-sea expedition.

The video showed a goblin shark swimming about 3,940 feet below the surface near Jarvis Island, a U.S. coral island in the central Pacific Ocean. The shark measured roughly 10 feet in length and was estimated to be more than 50 years old.

The second observation occurred in the deep waters of the Tonga Trench, the second-deepest region on Earth, which reaches depths of more than 32,800 feet. There, an underwater camera recorded another goblin shark swimming at approximately 6,560 feet below the surface. The discovery set a new record and demonstrated that the species can inhabit even greater depths than scientists previously believed.

A larger and more extreme habitat than expected

Another major finding was confirmation that the goblin shark occupies a much broader geographic range than previously thought.

Scientists had believed the species was limited to waters near Japan, Australia, Taiwan, New Zealand, the Gulf of Mexico, and parts of the Atlantic and Indian Oceans. The new observations confirm that goblin sharks also inhabit the central Pacific, suggesting they may be far more widespread across the world’s oceans.

The sightings also confirmed that the species lives at depths exceeding 6,560 feet. These permanently dark environments experience pressures more than 200 times greater than those at sea level, while food remains extremely limited.

Researchers observed the sharks moving slowly and calmly, conserving energy rather than making sudden bursts of speed. This deliberate pace appears to be a key adaptation for surviving in one of Earth’s most challenging environments.

New technology opens a window into the deep

These discoveries would not have been possible without advances in deep-sea exploration technology, including autonomous underwater vehicles and remotely operated cameras that allow scientists to reach some of the most inaccessible places on Earth.

Researchers estimate that less than 5 percent of the world’s oceans have been explored. This stands in sharp contrast to our extensive knowledge of Earth’s land surfaces and even our growing understanding of outer space.

Given how little of the deep ocean has been explored, scientists expect many more discoveries to await beneath the waves. The recent goblin shark sightings may represent only the beginning of uncovering a vast and largely unexplored ecosystem hidden in the darkness of the deep sea.

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