Kalmar "Balaenoptera borealis" tana nufin wani nau'in baleen whale wanda aka fi sani da "Sei whale." Kalmar "Balaenoptera" ta samo asali ne daga kalmomin Latin "balaena," wanda ke nufin "whale," da "ptera," wanda ke nufin "reshe," yayin da "borealis" yana nufin "arewa." Saboda haka, ana iya fassara kalmar "Balaenoptera borealis" a matsayin "kabin tekun arewa."
