Search results
Results from the WOW.Com Content Network
The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches. The hadal zone ranges from around 6 to 11 km (3.7 to 6.8 mi; 20,000 to 36,000 ft) below sea level , and exists in long, narrow, topographic V-shaped depressions.
The organic matter in the hadal zone is more quickly buried than in the abyssal zone, allowing it to avoid oxidative degradation and become available for subsurface microbes. This sedimentation of labile, organic matter is the reason why microbial communities distinct to the hadal zone may be observed globally.
The mesopelagic zone is a layer of the oceanic zone lying beneath the epipelagic zone and above the bathypelagic zone, at depths generally between 200 and 1,000 m (656 and 3,280 ft). The mesopelagic zone receives very little sunlight and is home to many bioluminescent organisms.
(a) Some neustonic species lay eggs on floating objects and sometimes pelagic organisms (e.g., Halobates spp.), while others require surface floating objects for early life cycle stages (e.g., Dosima fascicularis [21]), still others may remain at or near the surface throughout a life cycle due to a dependence on endosymbiotic photosynthetic ...
An organism living in a pelagic habitat is said to be a pelagic organism, as in pelagic fish. Similarly, an organism living in a demersal habitat is said to be a demersal organism, as in demersal fish. Pelagic habitats are intrinsically shifting and ephemeral, depending on what ocean currents are doing.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The Black Sea is an example of a body of water with a prominent chemocline, though similar bodies (classified as meromictic lakes) exist across the globe. [ 4 ] [ 5 ] Meromictic lakes are the result of meromixis, which is a circumstance where a body of water does not fully mix and circulate, causing stratification .
Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.