***apologies for cross-postings*** The first webinar in the 4-part, 2022 Discovery of Sound in the Sea (DOSITS) <http://www.dosits.org> Underwater Acoustics webinar series is scheduled for *Wednesday, April 20, 2022, at 1:30pm EDT. * During this *free, 60-minute webinar,* Dr. Joseph Warren (Stony Brook University) will provide an overview of the *fundamentals of underwater sound*. Knowledge of basic underwater sound principles is key to understanding sound detection and reception in marine mammals, interpreting potential effects, and making informed management decisions. The webinar will include a presentation followed by a period of facilitated discussion. This event is open to all interested individuals, however, *registration is required*. For a registration link and other details, please visit the 2022 Webinar Series page on the DOSITS website: https://dosits.org/decision-makers/webinar-series/2022-webinar/. All DOSITS webinars are hosted via Zoom; a YouTube link will also be made available to registered participants. *All webinars will be recorded* and posted to the DOSITS website about 1-2 weeks following each live event. DOSITS is again offering a free *Certificate of Professional Developmen*t in association with the 2022 Underwater Acoustics Webinar Series. For certificate requirements and other details, please visit the 2022 DOSITS Webinar Series page: https://dosits.org/decision-makers/webinar-series/2022- webinar/. Questions? Please contact Holly Morin (holly_morin@uri.edu)