homehome Home chatchat Notifications


World's deepest living fish is the ghostly snailfish. It was spotted 8,178 meters down the Mariana Trench

There's a whole unexplored, almost alien-like world at the bottom of the world's deepest oceans.

Tibi Puiu
August 28, 2017 @ 7:39 pm

share Share

Barring a dedicated submersible, the deepest below the ocean’s surface any human has gone is 1,752 feet (534 m), a record held by French divers at the Compagnie Maritime d’Expertises. Marine creatures can be found of course far deeper than that, some even in the darkest and coldest recesses of the bottom of the ocean where light’s touch had long faded along the way.

To withstand the immense pressures found at the bottom of the ocean, fish produce a substance called osmolyte, which helps cells maintain volume and fluid balance. The fish’s body can’t produce any of this substance below 26,900 feet (8,200 meters), which is why scientists say that — theoretically at least — you won’t find fish anymore. And the ghostly-looking snailfish (Liparidae) likes to live dangerously swimming just barely above this dangerous edge.

The snailfish is officially the deepest-living fish we’ve found after researchers at the Japan Agency for Marine-Earth Science and Technology filmed multiple individuals at 4K resolution casually munching bait at 8,178 meters below a section of the Mariana Trench.

Two compact landers were sent deep below the ocean’s surface to film the whole ordeal. After three hours and 37 minutes, a bunch of snailfish came flocking at the sweet mackerel dinner. Some shrimp later joined the feast as well.

These bizarre-looking creatures with a tadpole-like tail have large heads, small eyes, and no scales, and are normally slightly larger than a human hand in length. This May 18 recording dethroned the previous record holding deepest fish sighting by about 26 meters. It will be interesting to see whether we can find fish swimming at even greater depths. Perhaps, one day, we’ll have the surprise of a lifetime by recording a fish a depths far greater than 8,200 meters operating through some exotic, almost alien-like biology.

In the meantime, this sighting gives to show how deep trench communities are much more active and interesting than previously thought.

share Share

A Soviet shuttle from the Space Race is about to fall uncontrollably from the sky

A ghost from time past is about to return to Earth. But it won't be smooth.

The world’s largest wildlife crossing is under construction in LA, and it’s no less than a miracle

But we need more of these massive wildlife crossings.

The Fat Around Your Thighs Might Be Affecting Your Mental Health

New research finds that where fat is stored—not just how much you have—might shape your mood.

New Quantum Navigation System Promises a Backup to GPS — and It’s 50 Times More Accurate

An Australian startup’s device uses Earth's magnetic field to navigate with quantum precision.

Japan Plans to Beam Solar Power from Space to Earth

The Sun never sets in space — and Japan has found a way to harness this unlimited energy.

Could This Saliva Test Catch Deadly Prostate Cancer Early?

Researchers say new genetic test detects aggressive cancers that PSA and MRIs often miss

This Tree Survives Lightning Strikes—and Uses Them to Kill Its Rivals

This rainforest giant thrives when its rivals burn

Engineers Made a Hologram You Can Actually Touch and It Feels Unreal

Users can grasp and manipulate 3D graphics in mid-air.

Musk's DOGE Fires Federal Office That Regulates Tesla's Self-Driving Cars

Mass firings hit regulators overseeing self-driving cars. How convenient.

A Rare 'Micromoon' Is Rising This Weekend and Most People Won’t Notice

Watch out for this weekend's full moon that's a little dimmer, a little smaller — and steeped in seasonal lore.