Dear All, Several new thematic collections are being currently considered in the journal Frontiers in Marine Science (section: Marine Megafauna). We list below some of them and invite expressions of interest, so that we can gauge the level of interest they may receive. Topic 1: Conservation ecology of marine mammals in southeast Asia and western Pacific Topic 2: Behavioural ecology of island-associated cetaceans Topic 3: Population processes of apex marine predators We would like to hear from anyone interested in contributing a manuscript to any of the above topics. Please send us your tentative title, let us know email address of the lead or corresponding author, and indicate which topic you are interested in participating. Please send this brief info to: FrontiersMarSci.MarMam@gmail.com Note please that as Frontiers is an Open Access platform, standard manuscript processing fee will apply to all accepted articles. Many thanks to all for your interest. Bill Richards Assistant to Guest Editorial Team