Marcus makes his home near Cologne in Germany. Following a lifelong interest in natural history and in foreign cultures, he has been photographing since 1988. Travel goes hand in hand with stock photography - both are his life and passion. His images are published internationally on a wide range of products including books, calendars and greetings and postcards. His pictures have also been shown during photo exhibitions in several countries such as in the Smithsonian National Museum of Natural History in Washington D.C.