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Sealing the hatch
An expedition · 0 — 10,935 m

Into the
Abyss

Ninety-five percent of the ocean has never been seen by human eyes. Hold your breath. We're going down.

Descend

The last wilderness on Earth.

We have better maps of Mars than of our own sea floor. Below a thousand metres, no sunlight survives, the pressure would crush a submarine, and life makes its own light.

95%Unexplored
1,086Bar at the bottom
76%Of deep life glows
0 — 200 mEpipelagic

Sunlight zone

Where light still reaches, plankton turn sunshine into half the oxygen you breathe. Everything below depends on what falls from here.

PhytoplanktonSea turtlesCoral reefs
200 — 1,000 mMesopelagic

Twilight zone

A blue dusk that never ends. Every night, billions of animals rise to feed and sink again by dawn: the largest migration on the planet.

LanternfishHatchetfishSiphonophores
1,000 — 4,000 mBathypelagic

Midnight zone

Total darkness. Light here is a language: lures, warnings, invisibility cloaks and love letters written in blue.

AnglerfishVampire squidGulper eel

Field guide

Residents of the dark, photographed where few cameras have been. Hover a card to read its story.

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Anglerfish with a glowing lureN° 011,000 – 4,000 m

Anglerfish

Melanocetus johnsonii

Her lure is a pocket of glowing bacteria. Males are a tenth her size and fuse to her body for life.

Vampire squid with cloak-like armsN° 02600 – 1,200 m

Vampire squid

Vampyroteuthis infernalis

Not a vampire at all: it eats marine snow, and when threatened it turns itself inside out and squirts glowing mucus.

Glowing siphonophore colonyN° 03700 – 1,000 m

Siphonophore

Praya dubia

One "animal" made of thousands of clones. At up to 40 m, it may be the longest creature on Earth.

Dumbo octopus hoveringN° 043,000 – 7,000 m

Dumbo octopus

Grimpoteuthis

The deepest-living octopus. It flaps ear-like fins to hover over the sea floor and swallows prey whole.

Ghostly hadal snailfishN° 056,000 – 8,336 m

Hadal snailfish

Pseudoliparis swirei

The deepest fish ever filmed. Soft, scaleless and translucent, built to survive 800 times surface pressure.

Keep
descending ↓

4,000 — 6,000 mAbyssopelagic

The Abyss

Near-freezing, crushing and silent. Vast plains of soft ooze where a single fallen whale feeds a community for fifty years.

Sea pigsTripod fishDumbo octopus
6,000 — 10,935 mHadalpelagic

Hadal trenches

Named for Hades. The Challenger Deep: more people have walked on the Moon than have been here.

SnailfishAmphipodsXenophyophores

Pressure: a tonne per thumbnail.

Temperature: just above freezing.

Light: only what life makes.

Company: more than you'd think.

8,000Metres · Final descent