Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook
More News

High-Speed Video Exposes Snapping Shrimp

Facebook Twitter LinkedIn Email Comments
Scientists from the University of Twente in Enschede, the Netherlands, and their colleagues in Germany have solved the mystery of how snapping shrimp make their distinctive noises. Biologists had theorized that the crustaceans produce the 210-dB snaps, which stun or kill prey and predators, by clamping shut their larger claw. Performing in front of a 40,500-fps video camera, however, the shrimp revealed that they use cavitating bubbles.

The researchers describe in the Sept. 22 issue of Science how the 5.5-cm-long shrimp Alpheus heterochaelis produce 100-km/h jets of water with their claw. At this velocity, the jets lower the pressure around microbubbles in their flow to below the vapor pressure of water. The bubbles expand to 7 cm in diameter, then collapse, producing a loud pop 650 µs after the claw has fully closed.

Photonics Spectra
Dec 2000
Research & TechnologyTech Pulse

Comments
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, info@photonics.com

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.