*1st Announcement* On behalf of the Organizing Committee composed by G.Pavan, P.Tyack, G.Riccobene and W.Barletta, I'm glad to announce an interdisciplinary high level workshop hosted by the School of Ethology of the Ettore Majorana Centre, entitled "Cetacean echolocation and outer space neutrinos: ethology and physics for an interdisciplinary approach to underwater bioacoustics and detection of astrophysical particles" to be held in October 2013, 18th-21st in Erice, Sicily. The development of underwater ocean observatories has stimulated new interactions between disparate disciplines to optimize the their sensors and layout. Observatories based upon underwater cables are expensive to install and difficult to move, but they offer particular promise for long term observational data sets unlike any gathered to date. The cost and opportunity argue for planning and technical exchanges from as broad an array of disciplines as possible. One of the least predictable synergies has come from interactions between astrophysicists working to detect light and acoustic signals from neutrinos and marine biologists listening to the sounds of marine animals (Nosengo, Nature 462, December 2009). The workshop will focus on the study of the acoustic behaviour of marine mammals, on the acoustic detection of neutrinos in the sea, on the sharing of detection technologies, and on the related technological challenges with a wide interdisciplinary approach. The workshop is intended to join these different disciplines in the understanding of the underwater acoustic world and in the development of common research strategies and protocols. On one side high level technologies will be explored to improve acoustic detection capabilities, to serve both biological and physical studies. On the other side, the workshop will explore the sensory and cognitive skills that have allowed mammals to successfully exploit the marine environment and to evolve as top predators there by using acoustics. The expected audience would come from different disciplines, mainly marine biology, marine bioacoustics, ethology, acoustics, mathematics, acoustical oceanography, astroparticle physics and embraces many science fields related with the study, monitoring and conservation of the marine environment. Top scientists will present the state of the art in their peculiar disciplines and selected contributes will be presented by participants in a context open to discussion and knowledge sharing. Some preliminary info are available here: www.unipv.it/cibra/erice2013.html More details on the registration procedures and on the workshop program will be available as soon as we will have a complete list of speakers and talks. For any information, please contact gianni.pavan@unipv.it Gianni Pavan -- Centro Interdisciplinare di Bioacustica e Ricerche Ambientali Università degli Studi di Pavia Via Taramelli 24, 27100 Pavia http://www.unipv.it/cibra http://mammiferimarini.unipv.it