deep ocean
Where trenches form
The deep ocean refers to the vast, lightless zones of the sea far below the surface, typically beginning around 200 meters down where sunlight no longer penetrates.
These waters make up most of Earth's ocean volume and contain extreme conditions: crushing pressure, near-freezing temperatures, and perpetual darkness.
Life in the deep ocean has evolved remarkable adaptations, from bioluminescence to pressure-resistant bodies.
Scientists are still discovering species in the deep ocean.
- vampire squidDeep-sea cephalopod with webbed arms
- manganese nodulesMineral accretions from ocean depths
- chemosynthesisEnergy from chemical reactions
- submersibleUnderwater exploration vehicle
- bioluminescenceOrganism-generated light emission
pitch black · bathyscaphe · submarine canyon · amphipods · sea creatures · lanternfish · extremophiles · pressure · thermocline · unexplored depths · giant squid · trench · Mariana · sunless · fathom · black smokers · carbon sequestration · hydrothermal
- Extreme PlacesDeath Valley, Mariana Trench, Mount Everest, Antarctica, Sahara Desert
- ocean worldsice crust, water world
- ocean depthsshallow, abyss, surface, seabed, seafloor
- unexplored placesunmapped, undiscovered, uncharted, cave systems, unexplored territory
- carbon sinksforests, trees, oceans, peatlands, soil
- Extreme Habitatshydrothermal vents, black smokers, sulfur springs, geysers, fumaroles
deep oceanshallow water
Low-depth aquatic area
shallows · surface waters · tidal pools · shoals · tide pools