For threats related to migration, high density seal aggregations were recorded in November 2009 and 2010 CISS helicopter surveys in Kenderli Bay, but the integrity of seal habitat in Kenderli Bay is currently threatened by an imminent large-scale coastal resort development. This resort development can be a serious disturbance for seals. The local authorities have been advised about the need to preserve the seal habitats in the bay, but it is not yet clear what steps are planned to achieve this. According to the present study, Kosa Kenderli plays an important role for the seasonal migration of the Caspian seals and is recommended to be a protection area.