Locomotion
For the most part the Crystal Jellyfish lets the wind and water currents take it where they would like. It is not until they are threatened or attempting to feed that they will use a lot of energy to swim.
A. victoria, a paddling type hydromedusa, is found to draw fluid from the upper bell surface and eject this fluid in pairs of counter-rotating, slow-moving vortices near the bell margins. (Lipinski and Mohensi 2009)
"Variable swim contractions are controlled by a combination of synaptic input from the motor network of the inner nerve ring, synaptic input from a subumbrellar nerve net, and electrotonic depolarization from adjacent, active muscle cells. The ectoderm of the subumbrellar segment includes striated muscle with a circular orientation which produces swim contractions." (Satterlie 2008)
In a study done by Lipinski and Mohseni flow structures of S. Turbulso and A. Victoria were studied. Strouhal numbers represent the ratio of oscillation flow mechanism. A. victoria swim with a Strouhal number of 1.1 compared to .1 in S. tubulosa. This means that moving water produced by A. victoria remain in the tentacle region roughly 10 times as long as those produced by S. tubulosa (a similar jelly), which presents an excellent feeding opportunity during swimming for A. victoria. (Lipinsk & Mohseni, 2009)
A. victoria, a paddling type hydromedusa, is found to draw fluid from the upper bell surface and eject this fluid in pairs of counter-rotating, slow-moving vortices near the bell margins. (Lipinski and Mohensi 2009)
"Variable swim contractions are controlled by a combination of synaptic input from the motor network of the inner nerve ring, synaptic input from a subumbrellar nerve net, and electrotonic depolarization from adjacent, active muscle cells. The ectoderm of the subumbrellar segment includes striated muscle with a circular orientation which produces swim contractions." (Satterlie 2008)
In a study done by Lipinski and Mohseni flow structures of S. Turbulso and A. Victoria were studied. Strouhal numbers represent the ratio of oscillation flow mechanism. A. victoria swim with a Strouhal number of 1.1 compared to .1 in S. tubulosa. This means that moving water produced by A. victoria remain in the tentacle region roughly 10 times as long as those produced by S. tubulosa (a similar jelly), which presents an excellent feeding opportunity during swimming for A. victoria. (Lipinsk & Mohseni, 2009)
In the video to the right we are able to see the contractions of of the striated muscle of the bell that are used by the jellyfish to propel the it forward.
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