Sem’ Ostrovov or the Seven Islands archipelago (8.748°N x 37.570°E) is made up of a number small Islands ranging from 0,07 to 2,6 km2, located 1-3 km off the eastern coast of the Kola Peninsula.
Seabirds found in the archipelago include Northern gannets (200-300 pairs), cormorants (100 pairs), European shags (200-300 pairs), Great skuas (20 pairs), Arctic skuas (100-150 pairs), Great black-backed gulls (500-800 pairs), Herring gulls (500-800 pairs), Common gulls (100 pairs), Kittiwakes (10,000-25,000 pairs), Common guillemots (15,000-20,000 pairs), Brünnich’s guillemots (2,000-3,000 pairs), Atlantic puffins (3,000-5,000 pairs), razorbills (300 pairs) and black guillemots (200-400 pairs).
The islands became a natural reserve in 1938 and monitoring has been carried out ever since. The archipelago became a SEATRACK locality in 2015.
Notice: Russian field sites are not part of SEATRACK phase III.