- Posted By
1st Dec, 2020
- The “sea sparkle” has been witnessing Karnataka coast since about a month.
What is sea sparkle?
- The bloom of NoctilucaScintillans, commonly known as “sea sparkle”.
- The bioluminescent Noctiluca Scintillansalso brightened the sea water during night.
- The toxic blooms of Scintillanswere linked to massive fish and marine invertebrate kills.
What is the concern?
- It has displaced microscopic algae called diatoms, which form the basis of the marine food chain.
- This has deprived food for the planktivorous fish.
How it kills the organisms?
- The species does not produce a toxin, it was found to accumulate toxic levels of ammonia, which is then excreted into the surrounding waters, possibly acting as the killing agent in blooms.
- The ammonia makes Scintillansunpalatable for most creatures.
- Plankton bloom was reported when the density of plankton would be more than 1,00,000 cells per m3.
What is Bioluminescence?
- It is the production and emission of light by a living organism and occurs due to a chemical reaction, involving a light-emitting molecule and an enzyme, called luciferin and luciferase.
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