With a body like a torpedo and have strong muscles like a hybrid motorcycle while speeding down the street. However, in a study showing that a moon jellyfish swim as slowly pulsating bells, was able to swim more efficiently than salmon. Compared to its body mass, jellyfish just spend a little energy to roam the oceans than any aquatic animals.
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| The moon jellyfish is an incredibly efficient swimmer, researcher says. (Picture from: http://news.softpedia.com/) |
Brad Gemmell, a researcher from the Marine Biological Laboratory in Woods Hole, Massachusetts, found that moon jellyfish had a unique way to take back the energy of each thrust while swimming. Soft-bodied animals that use a techniques that can give an extra boost without the need to move his muscles. They could roam farther in the ocean with almost no energy.
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| A spinning vortex of water creates a region of high pressure (red/orange) under the jellyfish. (Picture from: http://www.nature.com/) |
Moon jellyfish study done by Gemmell is part of a project that funded by the U.S. Navy to examine the unique movement technique of the marine animals. Gemmell analyzing the jellyfish movement and realized that the animal was able to add a little speed boost, while its body motionless.
"Initially we ignore the signs. But every jellyfish species that we observed turns out to do it," said Gemmell. "Obviously it's not just a coincidence that appear in the data." Gemmell's study results were published in the Proceedings of the National Academy of Sciences journal on Monday, October 7, 2013.
To ensure the acceleration, Gemmell crippling some of the moon jellyfishs with a solution of magnesium chloride that blocks nerve signals to the animal's swimming muscles. Then he pushed the jellyfish using mechanical cane and observe the water movement around the animals.
When jellyfish hood which like an umbrella was contracted, they created two water vortexs like donuts that constantly moving around the jellyfish body. When struck, the animal was entered into its first circle to pushing it forward. *** [EKA | FROM VARIOUS SOURCES | NATURE | GABRIEL TITIYOGA | KORAN TEMPO 4368]
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