Challenger Deep
Deepest ocean point
Challenger Deep is the deepest known point in the ocean, located in the Mariana Trench in the western Pacific.
At nearly 36,000 feet below sea level, it represents the extreme limit of oceanic depth.
Named after the HMS Challenger, whose 1870s expedition first measured it.
Only a handful of crewed vessels have reached Challenger Deep.
Subaqueous topographical measurement
- abyssalExtremely deep, unmeasurable
- hydrothermal ventsSubmarine volcanic water jets
- sonarUnderwater detection by echoes
- submersibleUnderwater exploration vehicle
pressure · benthic · thermocline · salinity · water column · ocean floor · deep-sea · depth sounding
Self-propelled deep-diving craft
- TriesteNortheastern Italian seaport
- WalshSurname denoting outsider origin
- CameronScottish personal name
- descentDownward slope or lineage
dive · expedition · scientific research · deep-sea exploration · oceanographer
Deepest oceanic chasm
- subduction zoneWhere one plate slides under another
- tectonic platesMobile crustal sections
- oceanic trenchDeepest seafloor depression
- seafloorOcean's solid base
lithosphere · Pacific Ocean · earth's crust · seismic activity · geomorphology · underwater canyon · continental shelf · mid-ocean ridge
Immeasurably deep or obscure
- unfathomableBeyond comprehension or measurement
- depthsLowest or innermost regions
- chasmDeep, steep-sided gap
- voidWithout legal effect
deepest · bottomless · darkness · crushing pressure · ocean deep · profound · nadir · lowest point
Small laterally-flattened crustaceans
- sea cucumbersElongated marine echinoderms
- bacteriaNucleus-free single-celled organisms
- extremophilesOrganisms surviving extreme conditions
- bioluminescenceOrganism-generated light emission
bathymetry
Subaqueous topographical measurement
- abyssalExtremely deep, unmeasurable
- hydrothermal ventsSubmarine volcanic water jets
- sonarUnderwater detection by echoes
submersible · pressure · benthic · thermocline · salinity · water column · ocean floor · deep-sea · depth sounding · echo location
bathyscaphe
Self-propelled deep-diving craft
- TriesteNortheastern Italian seaport
- WalshSurname denoting outsider origin
- CameronScottish personal name
descent · dive · expedition · scientific research · deep-sea exploration · oceanographer
Mariana Trench
Deepest oceanic chasm
- subduction zoneWhere one plate slides under another
- tectonic platesMobile crustal sections
- oceanic trenchDeepest seafloor depression
seafloor · lithosphere · Pacific Ocean · earth's crust · seismic activity · geomorphology · underwater canyon · continental shelf · mid-ocean ridge · plate boundary
fathomless
Immeasurably deep or obscure
- unfathomableBeyond comprehension or measurement
- depthsLowest or innermost regions
- chasmDeep, steep-sided gap
void · deepest · bottomless · darkness · crushing pressure · ocean deep · profound · nadir · lowest point
amphipods
Small laterally-flattened crustaceans
- sea cucumbersElongated marine echinoderms
- bacteriaNucleus-free single-celled organisms
- extremophilesOrganisms surviving extreme conditions
- watersoceans, seas, Red Sea, lakes, Black Sea
- Pacific OceanMariana Trench, Hawaiian Islands, Coral Sea, Bering Sea, Galapagos Islands
- Expeditionsexpedition, Antarctic expedition, Arctic expedition, expeditions, Arctic exploration
- Extreme PlacesDeath Valley, Mariana Trench, Mount Everest, Antarctica, Sahara Desert
- deep seaabyss, seabed, ocean floor, ocean depths, seafloor
- deep oceanMariana Trench, ocean trench, trench, ocean floor, deep sea exploration
Challenger DeepMount Everest
Earth's highest summit
Everest summit · mountain summit · highest peak · summit · above sea level
Challenger Deepouter space
Vacuum beyond Earth's atmosphere
upper atmosphere · stratosphere · Death Zone · exosphere · International Space Station
challenge, challenging, challenger, challenged, challenges, unchallenged, Challenger