The trench is the boundary where two tectonic plates meet, where the Pacific Plate is being subducted under the Philippine Plate. The bottom of the trench is farther below sea level than Mount Everest is above it. At the bottom, water exerts a pressure of 108.6 MPa, over one thousand times the standard atmospheric pressure at sea level.

The trench is the boundary where two tectonic plates meet, where the Pacific Plate is being subducted under the Philippine Plate. The bottom of the trench is farther below sea level than Mount Everest is above it. At the bottom, water exerts a pressure of 108.6 MPa, over one thousand times the standard atmospheric pressure at sea level.

Deepest Point in the World (and Pacific Ocean)

Challenger Deep, Mariana Trench, Western Pacific Ocean: 35,840 feet / 10,924 meters

Deepest Point in the Atlantic Ocean

Puerto Rico Trench: 28,374 feet / 8648 meters

Deepest Point in the Arctic Ocean

Eurasia Basin: 17,881 feet / 5450 meters

Deepest Point in the Indian Ocean

Java Trench: 23,376 feet / 7125 meters

Deepest Point in the Southern Ocean

Southern end of the South Sandwich Trench: 23,736 feet / 7235 meters

#2 Atlantic Ocean (30,246 ft) (9,219 meters)

#3 Indian Ocean (24,460 ft) (7,455 meters)

#4 Caribbean Sea (22,788 ft) (6,946 meters)

#5 Arctic Ocean (18,456 ft) (5,625 meters)

#6 South China Sea (16,456 ft) (5,016 meters)

#7 Bering Sea (15,659 ft) (4,773 meters)

#8 Mediterranean Sea (15,197 ft) (4,632 meters)

#9 Gulf of Mexico (12,425 ft) (3,787 meters)

#10 Japan Sea (12,276 ft) (3,742 meters)