The photic zone (or euphotic zone, epipelagic zone, or sunlight zone) is the uppermost layer of a body of water that receives sunlight, allowing phytoplankton...

penetrates. Above the aphotic zone is the photic zone, which consists of the euphotic zone and the disphotic zone. The euphotic zone is the layer of water in...

than the photic zone, human knowledge of the bathypelagic zone remains limited by ability to explore the deep ocean. The bathypelagic zone is characterized...

sublittoral zone refers to the areas where sunlight reaches the ocean floor, that is, where the water is never so deep as to take it out of the photic zone. This...

that is, where the water is never so deep as to take it out of the photic zone. It extends from the low tide mark to the edge of the continental shelf...

organism's eyes are used to convert blue light from the photic zone or green bioluminescence in the aphotic zone into red light to aid vision. A new fluorophore...

referred to as the photic zone. The photic zone can be subdivided into two different vertical regions. The uppermost portion of the photic zone, where there...

referred to as the photic zone. The photic zone can be subdivided into two different vertical regions. The uppermost portion of the photic zone, where there...

demersal zone is variable in depth and can be part of the photic zone where light can penetrate, and photosynthetic organisms grow, or the aphotic zone, which...

an absence of a limnetic zone and the littoral zone spans the entire lake. Together, these two zones comprise the photic zone. There are two main sources...

being shallower than the photic zone, to being much deeper than the photic zone. When it is much deeper than the photic zone, this results in phytoplankton...

significant means of exporting energy from the light-rich photic zone to the aphotic zone below, which is referred to as the biological pump. Export...

Dead zones are hypoxic (low-oxygen) areas in the world's oceans and large lakes. Hypoxia occurs when dissolved oxygen (DO) concentration falls to or below...

darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish...

Bottom trawling Deep sea Intertidal zone Lake stratification Littoral zone Neritic zone Photic zone Profundal zone Sediment Profile Imagery Stream bed...

estuaries, the neritic zone, the photic zone, and deep zones. Marine biologists divide the intertidal region into three zones (low, middle, and high), based...

the entire ocean, the epipelagic zone is home to a massive number of organisms. Among other organisms, the photic zone is home to vital communities of...

reducing bacteria. Off the shores of the Wrangellia Terrane, the onset of photic zone euxinia was preceded by an interval of limited nitrogen availability...

divided into zones based on depth and the amount of light present. The photic zone starts at the surface and is defined to be "the depth at which light...

light-flooded surface, bringing nutrients from all oceans back to the photic zone. On August 20, 2014, scientists confirmed the existence of microorganisms...

compared to deep water due to primary production using nutrients in the photic zone. Surface water is, however, high in oxygen compared to the deep ocean...

Day length and insolation intensity also control the extent of the photic zone. Subsurface productivity is limited by nutrient availability, as the...

pelagic zone, the photic zone may be called the limnetic zone and the aphotic zone may be called the profundal zone. Inland from the littoral zone, one can...

referred to as the surface waters or the sunlit zone, and includes the photic zone. The photic zone is defined as the surface waters down to the depth...

Kellwasser events provide direct evidence for an increase in anoxia. Photic zone euxinia, documented by concurrent negative ∆199Hg and positive δ202Hg...

clandestine operations. The larvae of railroad worms (Phrixothrix) have paired photic organs on each body segment, able to glow with green light; these are thought...

upper photic zone is low in nutrient concentration, high in light intensity and penetration, and usually higher in temperature. The lower photic zone is...

matter export is driven by high levels of primary production in the photic zone, supported by a continual supply of nutrients to the oxic surface waters...

blocked out sunlight and disrupted photosynthesis on land and in the photic zone of the ocean, causing food chains to collapse. These volcanic outbursts...

electron transport chain. A quarter of all organic material that exits the photic zone makes it to the seafloor without being remineralised and 90% of that...