ARENA 2008 acoustic detection conference summary

The principle for detecting ultra-high energy neutrinos acoustically is briefly introduced. Current activities in this field are numerous and many have been reported at this conference. They include, e.g., the co-deployment of acoustic sensors in optical Cherenkov neutrino telescopes, the analysis of acoustic data from the existing hydrophone arrays for calibration and noise determination purposes, the design of bespoke acoustic sensors and the development of signal processing techniques. A digest of the status of current acoustic detection projects is presented. The work of the authors referenced in this text can be found elsewhere in these proceedings.