To clarify, mantis shrimp don't create sonoluminescence in the same way that pistol shrimp do, by "squeezing their claws together". They create it when the smack things, like snails, really hard with their raptorial appendages.

Another interesting angle to think about: We have all of this scientific interest in sonoluminescence, and the host of cool hypotheses mentioned, not just because it's cool. ..but because, among other things, the Navy REALLY wants to understand the process of cavitation, and throws money at research on the subject. Why? because ship and submarine propellers also create cavitation, and they want to create war machines that are not loud and whose propellers last longer.

Degassed water helps, too.

We did this as an experiment in undergrad. Degassed water, a container with a simple shape (we just had a rectangular prism), a thing to vibrate it, and a thing to control the amplitude/frequency of vibrations. We usually got three or four nodes, depending on how good we were doing.

It was quite a while ago, but I think we had a piece of equipment we used to tell whether we were getting close to a resonance, and then it was just by feel to actually get sonoluminescence to happen. Cuts down on the amount of patience required, but still takes a bit.

Sonoluminescence in general and Shrimpoluminescence in particular.

Just so you know, the flash that you see on impact here is likely a reflection from the light source for the high speed camera. The cavitation could very well produce sonoluminescence, as has been described for alpheids, it's just not visible here.

Is this sonoluminescence? I have read that there is a shrimp that can do that with its claw.

Tags for this video have been changed from 'shrimp, sonoluminescence, BBC Weird Science' to 'shrimp, sonoluminescence, BBC Weird Nature' - edited by Fedquip

Tags for this video have been changed from 'shrimp, sonoluminescence' to 'shrimp, sonoluminescence, BBC Weird Science' - edited by Fedquip

Good thing you included sonoluminescence in the tags, cuz people search for that all the time.

Tags changed from "shrimp" to "shrimp, sonoluminescence" by gold star member bl968.

Jim Griggs, inventor of the Hydrosonic Pump, is no longer a part of Hydro Dynamics Inc.

Stan Meyer was convicted of fraud in 1996. Meyer was found guilty of fraud when his Water Fuel Cell failed to impress three expert witnesses. When one of the court experts went to examine the Water Fuel Cell driven car, it was impossible to evaluate because it was not working. Meyer later died of apparent poisoning which led to a slew of retarded conspiracy theories. He bitched about funding and support yet, The James Randi Foundation had a standing $1 million dollar offer, all he had to do was prove his claims.

Color me skeptical. When Griggs says he was confused as to why the pipes were getting hot, and goes on to describe his pump, at no time is cavitation mentioned. This is a common, fairly well understood phenomenon. Yet it goes unmentioned in the video? WTF

Cavitation:

"This is a process in which tiny bubbles grow in size and then collapse as a result of pressure variations in the turbulent water...The temperature reached by the collapsing bubble depends on how much of the focused energy is lost by sound emission at the collapse and how much is consumed by internal processes such as vibrations, rotations, dissociation and eventually ionization... If there are many collapsing bubbles, they disturb each other, which leads to a less-spherical collapse and therefore less-efficient energy focusing. Nonetheless, temperatures can rise so high that the bubbles start to glow...Analysis of the emitted spectral lines4 indicates that the temperature reached inside these bubbles is around 5,000 kelvin."

http://www.nature.com/nature/journal/v434/n7029/full/434033a.html

The phenomenon where in light is emitted is called "Sonoluminescence." Sonoluminescence was discovered in 1934 by two German physicists.

http://watersciencenews.com/sonolum.htm
http://www.sciam.com/askexpert_question.cfm?articleID=000950E3-6815-1C71-9EB7809EC588F2D7

There was an interesting documentary on a hydro power plant at a dam where they showed the tremendous damage that caviation was causing to the turbine blades and housing. Typically, cavitation is seen as a source of inefficiency.

Here's the patent for the Hydrosonic Pump mentioned:
http://www.patentstorm.us/patents/5957122-fulltext.html