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A fishing light attractor is a fishing aid that uses lights attached to a structure above water or suspended underwater to attract fish and members of their food chain. Fish are most attracted to true-green light colors, and LEDs do the best job of illuminating this color.
Underwater vision is the ability to see objects underwater, ... Water preferentially absorbs red light, and to a lesser extent, yellow, green and violet light, ...
A dive light is routinely used during night dives and cave dives, when there is little or no natural light, but also has a useful function during the day, as water absorbs the longer (red) wavelengths first then the yellow and green with increasing depth. By using artificial light, it is possible to view an object in full color at greater depths.
Shorter wavelengths penetrate further, with blue and green light reaching the deepest depths. [6] This is why things appear blue underwater: how colours are perceived by the eye depends on the wavelengths of light that are received by the eye. An object appears red to the eye because it reflects red light and absorbs other colours.
Ocean optics is the study of how light interacts with water and the materials in water. Although research often focuses on the sea, the field broadly includes rivers, lakes, inland waters, coastal waters, and large ocean basins. How light acts in water is critical to how ecosystems function underwater.
The blue-green light is emitted through the translucent shell, which functions as an efficient diffuser of light. ... TED: Glowing life in an underwater world (video)