Dear MARMAM community, We are looking for recordings of male harbor seals, either from zoos and aquariums, research institutions, or the wild. These can be either in air or underwater recordings, with a preference for in air vocalizations. Online repository data are also very welcome, with the exclusion of Macaulay Library from which we have already obtained data. We would like to use these vocalizations to complement already existing data to calculate vocal parameters in respective seal groups in the course of one of my PhD chapters. This chapter investigates the differences of vocal behavior in several seal groups (under human care trained and untrained vocalizations, as well as wild vocalizations). Any type of vocalization is of interest, as long as it's from male harbor seals over the age of ~ 2 years. Please contact us via diandra.duengen@mpi.nl. Before any of the data would be considered for any other publication than the thesis chapter, the owner of the data will be contacted and further details discussed. Cheers, Diandra <>< ><> <>< <>< ><> <>< Diandra Duengen PhD student, Comparative Bioacoustics Group Max Planck Institute for Psycholinguistics