Nhamba yevanhu veAntarctic blue whale iri kukura nekukurumidza kweanenge 7.3% pagore, asi yakavhimwa kusvika padanho rakaderera zvekuti inoramba iri pachikamu chidiki chehuwandu hwepamberi pekubata hove. Nhamba yevanhu vepasi rose ichiri kuda kuchengetedzwa, asi haisi panjodzi yekutsakatika. Kubva pakaunzwa kurambidzwa kwekubata hove, zvidzidzo zvakaongorora kuti huwandu hwepasi rose hweblue whale hunochengetedzwa huri kuwedzera here kana kuti hwakagadzikana. MuAntarctic, fungidziro dzakanakisa dzinoratidza kuwedzera kwe7.3% pagore kubva pakuguma kwekubata hove, asi huwandu hwakawanda hwevanhu hunosiyana pasi pe1% yezviyero zvavo zvekutanga. Kuwanikwa kwevanhu veAntarctic blue whale kuchamhembe kwakadziva kumabvazuva kwePacific kunosiyana-siyana pasi pe7.3% pagore.
kuchamhembe kwakadziva kumadokero kwePacific pakati peKamchatka nechokumusoro kweJapan