Dear marine mammal research community, I am involved in drafting an invited manuscript for Frontiers in Marine Science on the use of passive acoustic monitoring (PAM) as a tool for monitoring marine biodiversity (see Frontiers topic announcement at https://goo.gl/FMErBs). My co-authors are Dr. Linda Weilgart (Dalhousie University), Dr. Aran Mooney and Dr. Ashlee Lillis (both at Woods Hole Oceanographic Institution). As part of our data collection for the manuscript, we have designed a survey for researchers and experts in this field (link to survey below). Our goals are to 1) summarize where we are now in this area of research, including current technologies and methodologies in use, current limitations/challenges, etc. and 2) discuss ways forward for PAM to be integrated into global ocean observing networks. Survey link: https://goo.gl/forms/8wkCKO6stUQ83odk1 If you work in PAM of marine biodiversity, we would greatly appreciate your time and effort in responding to this survey by the end of this month (30 April 2018). Please share with colleagues as appropriate. Sincerely, Lisa, Lindy, Aran, and Ashlee -- Dr. Lisa Munger Science Director Oceanwide Science Institute oceanwidescience.org