Riff Nienhagen (artificial reef)
About 1.5 km off the resort of Nienhagen and 8 km west of Warnemünde lies Germany's best-known artificial reef, built from 2002 as a fisheries research project in a fish-protection area at 11–12 m. Around 1,400 concrete elements – stacked rings, 2 t and 6 t tetrapods and groups of reef cones – plus 2,500 t of natural stone cover about 50,000 m², with a research platform in the middle. The structures add some 18,000 m² of surface for growth and shelter fish, and the research showed that the reef raised the fisheries value of the area. One diver report mentions moderate current and about 4 m visibility.
depth: 10–12 m