Asamushi Marine Biological Station was founded on July 8th, 1924 as an extension of the Biological Institute of the Faculty of Science of Tohoku University in Sendai. The Station is located on the small cap near the Asamushi hot spring facing the inner part of Mutsu Bay, which is the northernmost bay on Honshu-island. It is about 2km from Asamushi-onsen Station of Tohoku Main Line, JR.
Near the Station are rocky-boulder shores and san-gravel beaches. The rich shore flora and fauna as well as plankton are affected by influences of the cold Liman Current and the warm Tsugaru Current, which flow into the Bay. List of common animals, which have been used for experimental purpose in the Station, have been published (Hirai, E., 1963, Sci. Rep. Tohoku Univ., Ser. IV, Biol., 29, 369: Tsuchiya, M. and K. Osanai, 1978, Bull. Mar. Biol. Stn. Asamushi, Tohoku Univ., 16,29). Various sea urchins (Hemicentrotus pulcherrimus, Strongylocentrotus intermedius, S. nudus, Glyptocydaris crenularis and Temnopleurus hardwicki) are available for embryological experiment almost throughout the year. Various ascidans (Halocynthia roretzi, Ciona savignyi, Chelyosoma siboja and Ascidia sydneiensis samea) are also available inbreeding condition. The scallop (Patinopecten yessoensis) and the ascidian (Halocynthia roretzi) are cultivated in the Bay.
Buildings: The chief buildings consist of a main building, an outdoor aquarium house, a boat house and a dormitory. The main building (1 ,270m is a two storied concrete structure and divided into 27 rooms: a student laboratory, eight research laboratories, two special laboratories including thermostatic, cold and sterilized room, an electron microscopy laboratory, specimen room a library, two dark rooms, a meeting room, the director's room and an office room. the laboratories are provided with unfiltered and filtered running sea water.
Teaching and Research Facilities: The student laboratory can accommodate 30 students for marine biological courses. Research equipment includes microscopes (TEM, SEM, fluorescence, differential interference and others), a microscopic VTR, a fluorescence microscopic photometer, a sepctrophotometer, a refrigerated centrifuge, a lyophilizer, a high performance chromatography and others. Collecting gears for benthic animals and SCUBA are available.
Vessels: The Uto 11(11 .3m, 4.5t, 230HP, capacity of 24), the Chidori II (5.8m, 4OHP, capacity of 7) and a rowboat.
Accommodations: The dormitory (499m is a two storied concrete building, containing eight rooms (Japanese style). It can accommodate about 40 persons. Meals are furnished at cost except on Saturdays, Sundays and holidays.