On the sound of snapping shrimp
Michel Versluis, Barbara Schmitz, Anna von der Heydt, Detlef Lohse

TL;DR
This paper investigates the mechanism behind the snapping sound of shrimp, revealing that cavitation bubble collapse during claw closure produces the sound and light emission, modeled effectively by the Rayleigh-Plesset equation.
Contribution
It provides a detailed fluid dynamics analysis showing cavitation bubble collapse as the source of snapping shrimp's sound, supported by high-speed imaging and quantitative modeling.
Findings
Snapping sound is caused by cavitation bubble collapse.
Light emission occurs during cavitation bubble collapse.
A Rayleigh-Plesset based model explains the observations.
Abstract
Fluid dynamics video: Snapping shrimp produce a snapping sound by an extremely rapid closure of their snapper claw. Our high speed imaging of the claw closure has revealed that the sound is generated by the collapse of a cavitation bubble formed in a fast flowing water jet forced out from the claws during claw closure. The produced sound originates from the cavitation collapse of the bubble. At collapse a short flash of light is emitted, just as in single bubble sonoluminescence. A model based on the Rayleigh-Plesset equation can quantitatively account for the visual and acoustical observations.
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Taxonomy
TopicsUnderwater Acoustics Research
