To meet the expressed needs of the the international regulatory community, the *Discovery of Sound in the Sea (DOSITS)* <http://www.dosits.org/> Team is facilitating a *free*, *five-part webinar series on topics related to underwater sound.* An archived version of the 3rd webinar in this series, which covered the potential effects of sound on marine mammals, is available for viewing through the DOSITS site. Please visit the DOSITS webpage, Webinar Series for Regulators of Underwater Sound <http://www.dosits.org/resources/all/decisionmakers/ircwebinar/>, to view this archived webinar on sound and marine mammals. The 4th webinar in this series will take place on *Tuesday, May 10, 2016, at 12:00 pm (U.S. East Coast time)*. *Dr.’s Arthur Popper and Tony Hawkins* will discuss *sound sources and marine fishes, the potential effects of sound on marine fishes, exposure criteria, and data gaps. * *Interested individuals must register in advance* for this webinar. * To register please visit: http://www.dosits.org/resources/all/decisionmakers/ircwebinar/registration/ <http://www.dosits.org/resources/all/decisionmakers/ircwebinar/registration/>* Questions? Please contact Holly Morin at holly_morin@uri.edu.