 In its last years of operations, the ageing "Aleut" fleet caught over 1,200 humpback whales in the Gulf of Alaska and Bristol Bay, while the two large pelagic fleets killed over 2,800 humpbacks around the Aleutian Islands in the early 1960s, decimating the population to levels from which it has only recently recovered.Blue whales and fin whales suffered too, and hundreds of them were taken from 1963–1971 and almost none reported.The last major kill of blue whales was in 1964 when 170 were taken; fin whales, 2,500 that same year and none after 1974.