Beached bachelors: An extensive study on the largest recorded sperm whale Physeter macrocephalus mortality event in the North Sea. par Lonneke L IJsseldijk, Abbo van Neer, Rob Deaville, Lineke Begeman, Marco van de Bildt, Judith M A van den Brand, Andrew Brownlow, Richard Czeck, Willy Dabin, Mariel Ten Doeschate, Vanessa Herder, Helena Herr, Jooske IJzer, Thierry Jauniaux, Lasse Fast Jensen, Paul D Jepson, Wendy Karen Jo, Jan Lakemeyer, Kristina Lehnert, Mardik F Leopold, Albert Osterhaus, Matthew W Perkins, Uwe Piatkowski, Ellen Prenger-Berninghoff, Ralf Pund, Peter Wohlsein, Andrea Gröne, Ursula Siebert