Research divers in action at the second biggest barrier reef of the world near Belize and impressions of the Hamburg youth competition could be seen projected on the sails of the ALDEBARAN during the Night of Science in front of the Hamburg town hall. Following the footsteps of climate change visitors have been guided through the fascinating world of marine research. Working places of real scientists could be visited at first hand under deck of the 14 m long ALDEBARAN. The unique video installation gave a deep insight in marine research. The colorful undersea world was an impressive experience for many visitors that night.