It seems that Sharks is open for the Christmas period for 24 to 26 December 2014:
"From Wednesday 24 December to Friday, 26 December.
Hot Christmas.
Event Announcement: Even if there have long lingered no longer summer, the shark tank of the FKK Sharks is hot as after a period of solar irradiation. No wonder, because there is always something going on and even in the snow it is "mosque", which wants to make the upcoming Christmas party clearly. The celebration around tree balls together increases this year to the three traditional Christmas holidays from 24th to 26.12. It includes many "gifts" that is found in the form of attractive live shows, DJ music together with the associated dance of joy, a big buffet, champagne reception and guaranteed even many moments of shared happiness their implementation. This all guests the Christmas donates exactly what this time of year everyone is looking: satisfaction and joy; Heat in the heart and also guarantees a bit below. ".