The details of their lives  eluded scientists until an organization called  the Center for Whale Research began studying a single population near Washington State and  British Columbia in 1976.
Detail-detail dari kehidupan mereka membingungkan ilmuwan sampai suatu organisasi bernama Center for Whale Research mulai mempelajari satu populasi dekat Negara Bagian Washington  dan British Columpia pada tahun 1976.