deep sea
"Deep sea" refers to the vast, dark, and high-pressure regions of the ocean, typically beyond 200 meters in depth, where unique marine life thrives.
Definition
B2Oceanography
(technical, scientific)The part of the ocean below 200 meters, characterized by darkness, high pressure, and cold temperatures.
Example
- Scientists use specialized equipment to explore the deep sea and study its unique ecosystems.
- Deep-sea trenches can reach depths of over 10,000 meters.
B2Marine Biology
(technical, scientific)The oceanic zone where light does not penetrate, leading to a unique community of organisms adapted to extreme conditions.
Example
- Deep-sea creatures have evolved remarkable adaptations to survive in complete darkness.
- Bioluminescence is a common trait among deep-sea organisms.
B1Sport Fishing
(recreational, informal)Fishing in the open sea, far from the shore.
Example
- Deep-sea fishing is a popular activity among sport fishers seeking large catches.
- They chartered a boat for a deep-sea fishing expedition.
Similar
Terms that have similar or relatively close meanings to "deep sea":
deep wateropen seahigh seaat seahadopelagic waterabyssopelagic watersea devilrun deepsea catdeep spacedeep bluesea greensea roverabyssal bluesea loadsea donkeysea capsea drakesea monstersea light