Dear MARMAM Subscribers, We are very pleased to inform you that the Cetacean Population Studies, Volume 3 —Memorial volume for the late Dr. Seiji Ohsumi who was an eminent cetologist in Japan and unfortunately passed away in November 2019, is now published online here: https://cpops.jp/archive/index.html CPOPS is also available through our J-Stage webpage here: https://www.jstage.jst.go.jp/browse/cpops/ Cetacean Population Studies (CPOPS) is a peer-reviewed online journal focused on cetacean and other marine mammal studies. Further information about the journal can be found here: https://cpops.jp/published_prospectus/index.html To submit a manuscript for publication consideration, please visit: https://cpops.jp/paper_submission/index.html Regards, Hidehiro Kato, Ph. D. Chairman, Publication Committee for the Cetacean Population Studies Professor Emeritus, Tokyo University of Marine Science and Technology cetaceanpopulationstudies@gmail.com