You probably wouldn't be particularly flattered if someone called you a rat. However, if you are called a "Wasserratte" - or, water rat - that's not so bad. It simply means that you love to swim and could spend all day in the pool. The summer heat wave may be turning a lot of people into "Wasserratten," but Michael Wleklinski, pictured here, is a true "Wasserratte." He is a member of the Berlin Seals Club and takes a dip in ice cold waters on New Years Day.