to the harbor of List. In 1998 the station became part of AWI. Nowadays, there are about 30 scientists and technicians. Two guest houses allow to perform workshops and video conferences are possible with the AWI headquarters. The research focuses on coast ecology and coast geology. In the 1930 there have been oyster reefs below the mussel banks at the water level. Below these, there have been sabellaria reefs which have been destroyed by fishery. Nowadays there are only the mussel banks left. Helgoland The Biologische Anstalt Helgoland is situated at on the island Heligoland (German: Helgoland). The station exists since 1892. Scientists study the ecology of the North Sea in this research station. Since 1962, at Heligoland roadstead , phytoplankton and water samples are taken every weekday morning, the turbidity is measured (e.g. using a Secchi disk) and other parameters are recorded. The North Sea warmed by 1.65 °C since the start of the time series. Stations The institute maintains several research stations around the Arctic Ocean and on the Antarctic continent. Neumayer Station Neumayer-Station III is located at , about away from the previous station, Neumayer II which is now abandoned and covered by a thick ice cover. The new station (Webcam) is a futuristic-looking combined platform above the snow surface offering space for research, operations, and living since 2009. The station stands on 16 hydraulic posts which are used to adjust the building to the growing snow cover. A balloon-launching hall is located on the stations roof. Below the station PistenBully, Ski-Doos, sledges, and other equipment are stored in a garage built beneath the snow, with a ramp with a lid that seals the hole for the vehicles to enter. In summer, the station can host up to 40 people. The station contains several laboratories, has a weather balloon launching facility, and a hospital with telemedical equipment. The station has a stairwell and several utility and storage rooms in the garage. There is a snowmelt and power unit at the station. Dallmann Laboratory In cooperation with the Instituto Antártico Argentino (IAA), in 1994 the AWI opened a research station on King George Island at . The station is named after Eduard Dallmann, a German whaler, trader and Polar explorer who lived near Bremen. Koldewey Station Koldewey Station at is named after the German polar explorer Carl Koldewey and part of the French-German Arctic Research AWIPEV Arctic in