deepsea
Far below surface
Deepsea describes things found in, suited for, or operating in the deep ocean—typically depths beyond where sunlight penetrates.
Deepsea fishing targets species in deep waters.
Deepsea diving requires specialized equipment to withstand extreme pressure.
Usually hyphenated or written as two words: deep-sea, deep sea.
Overwhelming in intensity
- hydrostaticOf fluid pressure at rest
- atmosphereGaseous layer around planets
- compressionForcing into smaller space
- implosionViolent collapse inward
dense · extreme · submersion · pascal · bar · squeeze · bathyscaphe · pressurized
Bioluminescent deep-sea predator
- giant squidLargest known invertebrate
- isopodSeven-legged-pair crustacean
- viperfishBioluminescent deep-sea predator
- dragonfishFanged deep-sea fish
lanternfish · blobfish · oarfish · fangtooth · tube worms · coelacanth · vampire squid · rattail
Long narrow excavation
- chasmDeep, steep-sided gap
- voidWithout legal effect
- fathomlessImmeasurably deep or obscure
- bottomlessHaving no base
nadir · plunge · sunken · profound · unfathomable · gulf · pit · cavernous
Ocean floor hot spring
- benthicOf the sea bottom
- pelagicOf the open sea
- chemosynthesisEnergy from chemical reactions
- mid-ocean ridgeSubmarine volcanic mountain range
Underwater exploration vehicle
- bathysphereSpherical deep-sea vessel
- ROVPiloted-from-above underwater craft
- sonarUnderwater detection by echoes
- TriesteNortheastern Italian seaport
James Cameron · Alvin · oceanography · research vessel · expedition · Jacques Cousteau · mapping · underwater camera
Not yet discovered
darkness · enigmatic · unexplored · cryptic · eerie · otherworldly · strange · undiscovered
Steady, soft light
- lanternfishLight-producing deep-sea fish
- dragonfishFanged deep-sea fish
- light-emittingProducing visible radiation
- counterilluminationLight-producing stealth adaptation
crushing
Overwhelming in intensity
- hydrostaticOf fluid pressure at rest
- atmosphereGaseous layer around planets
- compressionForcing into smaller space
implosion · dense · extreme · submersion · pascal · bar · squeeze · bathyscaphe · pressurized · decompression
anglerfish
Bioluminescent deep-sea predator
- giant squidLargest known invertebrate
- isopodSeven-legged-pair crustacean
- viperfishBioluminescent deep-sea predator
dragonfish · lanternfish · blobfish · oarfish · fangtooth · tube worms · coelacanth · vampire squid · rattail · grenadier
trench
Long narrow excavation
- chasmDeep, steep-sided gap
- voidWithout legal effect
- fathomlessImmeasurably deep or obscure
bottomless · nadir · plunge · sunken · profound · unfathomable · gulf · pit · cavernous · abyssal
hydrothermal vent
Ocean floor hot spring
- benthicOf the sea bottom
- pelagicOf the open sea
- chemosynthesisEnergy from chemical reactions
ocean trench · mid-ocean ridge · seamount · submarine canyon · midnight zone
submersible
Underwater exploration vehicle
- bathysphereSpherical deep-sea vessel
- ROVPiloted-from-above underwater craft
- sonarUnderwater detection by echoes
Trieste · James Cameron · Alvin · oceanography · research vessel · expedition · Jacques Cousteau · mapping · underwater camera
unknown
Not yet discovered
secrets · darkness · enigmatic · unexplored · cryptic · eerie · otherworldly · strange · undiscovered · primordial
glow
Steady, soft light
- lanternfishLight-producing deep-sea fish
- dragonfishFanged deep-sea fish
- light-emittingProducing visible radiation
counterillumination · glowing · luminescent · bioluminescent