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Oct 15, 2004 · Estimated reading time: 10 minutes. A scuba diver in the open water is immersed in clear, pure blue light. Water strongly absorbs red, orange, and yellow light, while blue light penetrates into the depths. (Larry Madin, Woods Hole Oceanographic Institution) Light in the ocean is like light in no other place on Earth.
The image on the left is an in situ photograph of a hormathiid anemone; the image on the right shows the bioluminescent light emitted from the same animal. The emitted light is blue and comes from a mucous secretion. The animal is not actually red, but scientists briefly shined a red LED on it to show the light emission.
Oct 19, 2023 · Bio luminescence is a type of chemiluminescence, which is simply the term for a chemical react ion where light is produced. (Bio luminescence is chemi luminescence that takes place inside a living organism.) Bioluminescence is a " cold light." Cold light means less than 20% of the light generates thermal radiation, or heat.
Marine worms, sea cucumbers, sea stars and many types of phytoplankton also emit light. Bioluminescence involves a chemical reaction inside the animal’s cells. For some animals, those cells are located in a special light organ called a photophore that can look like a spotlight. Other organisms take on a more general glow.
Bioluminescence occurs through a chemical reaction that produces light energy within an organism's body. For a reaction to occur, a species must contain luciferin, a molecule that, when it reacts with oxygen, produces light. There are different types of luciferin, which vary depending on the animal hosting the reaction.
Nov 11, 2024 · Right: Percentage of 465 nm light reaching indicated depths for the same types of water. After Jerlov (1976). In the subtropics and mid-latitudes closer to the coast, sea water contains more phytoplankton than the very clear central-ocean waters. Chlorophyll pigments in phytoplankton absorb light, and the plants themselves scatter light.
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Why is bioluminescence produced in the ocean?
The light these creatures emit is created inside their bodies, meaning they are able to glow and glitter in complete darkness. Some of the planet's bioluminescent animals live in the deep ocean (although not all of them). Many exist in the twilight zone, the part of the ocean from 500 to 1,000 metres deep, which is always dark in its lower margin.
