Helen Rößler holds a B.Sc. Degree in Biology from the zoology department of the University of Hohenheim, Germany (Bachelor Thesis: Do nest holes represent a limited resource? Nest box use by edible dormice (Glis glis)). Her additional interest in marine studies brought her for a semester abroad to James Cook University, Townsville, Australia where she focused on biological oceanography, conservation of marine animals and Australian vertebrate fauna. After her Bachelor’s degree, she worked as a research assistant and project leader for LAMAVE in the Philippines (The Large Marine Vertebrates Research Institute Philippines) where she investigated abundancy and life history of whale sharks through photo identification. Since September 2016, she has studied for her Master in science in Odense, Denmark, where she is part of the sound communication group, and the marine biological research centre. For her Master Thesis, she is collecting data during the 2017 summer at Illugastaðir and Miðfjörður, Northwest Iceland, to investigate vocalisations and behaviour of male Icelandic harbour seals during the mating season. Her advisors on this project are Marianne H. Rasmussen of the University of Iceland, Magnus Wahlberg at the University of Southern Denmark in Odense, and Sandra M. Granquist, Head of the Biology Department, Icelandic Seal Center.