Deep Sea Dive
Scroll down to dive — feel the depth, pressure, cold and darkness.
Ocean surface
Sea level. Air pressure here is 1 atmosphere. From here, every 10 m down adds roughly one more atmosphere.
1 atm · 1 bar
Recreational scuba limit
Most recreational scuba diving stays within about 10 m for beginners; the recommended general limit is around 40 m.
2 atm · 2 bar
Advanced scuba limit
Near the recommended maximum for recreational diving (~40 m). Below this, the risk of nitrogen narcosis rises sharply.
5 atm · 5.1 bar
Bottom of the sunlight zone
The sunlit (epipelagic) zone ends near 200 m. Below it begins the twilight zone, where light fades fast.
21 atm · 21.3 bar
Deepest scuba dive ever
Ahmed Gabr reached 332.35 m on scuba in 2014 (Guinness World Record) — pressure here is about 34 atmospheres.
34.2 atm · 34.7 bar
Emperor penguin dive
Emperor penguins have been recorded diving to about 535 m while hunting — deeper than any other bird.
54.5 atm · 55.2 bar
Midnight zone begins
At 1,000 m sunlight is gone entirely. This is the bathypelagic "midnight" zone, home of the giant squid.
101 atm · 102 bar
Sperm whale dive
Sperm whales dive to around 2,000 m to hunt squid in total darkness, holding their breath for over an hour.
201 atm · 204 bar
Wreck of the Titanic
The Titanic rests at about 3,800 m on the Atlantic floor — under roughly 380 atmospheres of pressure.
381 atm · 386 bar
Abyssal plain
The vast abyssal plains lie around 4,000 m deep. Anglerfish lure prey with glowing bait in the pitch black.
401 atm · 406 bar
Hadal zone begins
Below 6,000 m lies the hadal zone — only found in deep ocean trenches. Pressure exceeds 600 atmospheres.
601 atm · 609 bar
As deep as Everest is tall
Mount Everest is 8,848 m tall. Sink it here and its peak would still be over 2,000 m below the surface.
886 atm · 898 bar
Challenger Deep
The deepest known point on Earth, in the Mariana Trench, about 10,935 m down — over 1,000 atmospheres of crushing pressure.
1,095 atm · 1,109 bar
You reached the deepest point on Earth.
Every metre you scroll takes you deeper. In seawater the pressure rises by about 1 atmosphere every 10 metres, the temperature drops toward 2–4 °C, and sunlight disappears almost completely by 200 m. Keep scrolling all the way to Challenger Deep.
Sources: NOAA Ocean Explorer, NOAA Ocean Service, and individual depth records.
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