Dear all, We are pleased to announce the recent publication of a special issue on "Multidisciplinary Integrated Surveys" in Progress in Oceanography. https://www.sciencedirect.com/journal/progress-in-oceanography/vol/166 This issue contains several papers dealing with marine mammals, such as: - Authier /et al/. *Exploring change in the relative abundance of marine megafauna in the Bay of Biscay, 2004–2016.* - Lambert /et al/. *Decadal stability in top predator habitat preferences in the Bay of Biscay.* - Petitgas /et al./*Ecosystem spatial structure revealed by integrated survey data* - Saavedra/et al/. *Assessing the environmental status of the short-beaked common dolphin (/Delphinus delphis/) in North-western Spanish waters using abundance trends and safe removal limits* - Spitz /et al/. P*rey consumption by cetaceans reveals the importance of energy-rich food webs in the Bay of Biscay.* All the best on behalf of all authors Jérôme Spitz Observatoire Pelagis, University of La Rochelle France