Made by Neal Agarwal.
Click on the above link for a fun and informative infographic showing life in the sea according to depth. Scroll down through the water column from the photic or sunlight Epipelagic zone (surface to 660ft / 200m), through the twilight or Mesopelagic (3,300ft / 200m), and then the midnight or Bathypelagic (13,000ft / 4000m) to the lower midnight or Abyssopelagic zone, from 13,000ft / 4000m to the ocean floor at 31,300 ft / 6,500m.
The lowest zone – the Hadopelagic is from 31,300 ft / 6,500m to the deepest part of the ocean which is mostly in the trenches. There are around 20 of these with the six deepest being found in the Pacific. Of these the Challenger Deep in the Marianas Trench is the deepest place on earth with either a depth of 35,814ft / 10,916m or 36,201ft / 11,034m depending on your source.
For a scale compared to heights above sea level the peak of Mount Everest would still be 6,785ft / 2,068m or 1.28 miles below the sea surface at this point.
Although seemingly incredible with the pressures at around 1,000 times those at sea level there are many life forms that exist in these Hadal zones as a recent video (below) from the University of Aberdeen shows.