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A universe of beauty, mystery and wonder

A universe of beauty, mystery and wonder
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Friday, May 3, 2013

ENVIRONMENTAL NEWS -


THE JELLYFISH INVASION

 

 


AND THE JELLYFISH SECRET FOR IMMORTALITY

As sea creatures continue to be depleted by overfishing and poisoned by man-made pollution, jellyfish are thriving and slowly taking over the oceans.
 
Sardines, herring, anchovies, for example, used to eat the eggs and larvae of jellyfish, and were also their main competitors for tiny zooplancton, jellyfish's main food source. 

But now with those small fish rapidly waning, jellyfish are thriving and devouring larval fish, thus preventing the renewal of fishery resources. 

The situation is spiraling down towards an ocean populated mainly by jellyfish.
 
The tourism industry and the fishing industry are in conflict, as coastal areas invaded by jellyfish scare tourists away. The jellyfish sting is extremely painful and often fatal.

Jellyfish are made up of 98% water. They have no brain, no heart, and no teeth, but they are excellent predators. Mostly carnivorous, they immobilize large prey with their poisonous tentacles. They come in all colors and sizes, from a few millimeters to several metres in diameter. They are also incredibly beautiful.

Read more: http://www.sciencedaily.com/releases/2013/05/130503094700.htm

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CAN THE JELLYFISH UNLOCK THE SECRET OF IMMORTALITY?
 
Some members of the species can at any stage of their development transform themselves back to a polyp, the organism’s earliest stage of life, thus starting their life cycle all over again.
 
Since this discovery made in 1988 by a young German student, scientists have learned that the rejuvenation of certain jellyfish is caused by environmental stress or physical assault.
 
It undergoes cellular transdifferentiation, an unusual process by which one type of cell is converted into another — a skin cell into a nerve cell, for instance. The same process occurs in human stem cells. Studies are ongoing.
 

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