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Pistol shrimp


ShortFuse

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Ok this little shrimp bastard got me wondering

 

I found out that people don't know what makes that +5000 Kelvin thing happen. They go as far as trying to relate quantum physics and theories of black holes to it.

Yet shrimp's claws appear to be mechanical in their construction.

 

from http://en.wikipedia.org/wiki/Pistol_shrimp :

 

The snap can also produce sonoluminescence from the collapsing cavitation bubble. As it collapses, the cavitation bubble reaches temperatures of over 5,000 K (4,726.85 degrees Celsius).[10] A quick comparison: the surface temperature of the sun is estimated to be around 5,778 K. The light is of lower intensity than the light produced by typical sonoluminescence and is not visible to the naked eye. It is most likely a by-product of the shock wave with no biological significance. However, it was the first known instance of an animal producing light by this effect. It has subsequently been discovered that another group of crustaceans, the mantis shrimp, contains species whose club-like forelimbs can strike so quickly and with such force as to induce sonoluminescent cavitation bubbles upon impact.[11]

 

^^But mantis shrimp should be able to see the sonoluminescent effects it produces. Still biologically insignificant?

 

Mantis shrimp possess hyperspectral colour vision, allowing up to 12 colour channels extending in the ultraviolet[10]. Their eyes (both mounted on mobile stalks and constantly moving about independently of each other) are similarly variably coloured, and are considered to be the most complex eyes in the animal kingdom.[11][12] They permit both serial and parallel analysis of visual stimuli.

 

 

And about sonoluminesence (http://en.wikipedia.org/wiki/Sonoluminescence):

The mechanism of the phenomenon of sonoluminescence remains unsettled. Theories include: hotspot, bremsstrahlung radiation, collision-induced radiation and corona discharges, nonclassical light, proton tunneling, electrodynamic jets, fractoluminescent jets (now largely discredited due to contrary experimental evidence), and so forth.

 

[...]

 

EXOTIC PROPOSALS

An unusually exotic theory of sonoluminescence, which has received much popular attention, is the Casimir energy theory suggested by noted physicist Julian Schwinger[4] and more thoroughly considered in a paper by Claudia Eberlein[5] of the University of Sussex. Eberlein's paper suggests that the light in sonoluminescence is generated by the vacuum within the bubble in a process similar to Hawking radiation, the radiation generated by the edges of black holes. Quantum theory holds that vacuum contains virtual particles, and the rapidly moving interface between water and gas converts virtual photons into real photons. This is related to the Unruh effect or the Casimir effect. If true, sonoluminescence may be the first observable example of quantum vacuum radiation. The argument has been made that sonoluminescence releases too large an amount of energy and releases the energy on too short a time scale to be consistent with the vacuum energy explanation[6], although other credible sources argue the vacuum energy explanation might yet prove to be correct.[7]

 

***

 

Other theories include potential temperatures of millions of Kelvins, Bubble fusion, Nuclear reactions etc.

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This shrimp is so fucking awesome, it even has a boy

 

Randall's Pistol Shrimp shares symbiotic association with a goby, especially Stonogobiops or Amblyeleotris. The goby has a good eye-sight and thus, warns the shrimp of any approaching predator in the exchange of food that the shrimp provides to the goby and the burrow that Randall's Pistol Shrimp digs for both, itself and the goby, to live in.

 

Yo 5-0! Blast that fool!

then they share some eats

 

 

they are only 30 bucks too. And apparently the sound of its claw gat is so loud it can wake you up at night.

http://www.freshmarine.com/randall-pistol-shrimp.html

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