. Cetaceans of the Channel Islands National Marine Sanctuary / prepared for National Oceanic and Atmospheric Administration, Channel Islands National Marine Sanctuary and NOAA, National Marine Fisheries Service by Stephen Leatherwood, Brent S. Stewart, Pieter A. Folkens. Whales California Channel Modern whaling, from shore stations and pelagic fleets, took a heavy toll on all stocks of humpback whales. An estimated 23,000 plus humpback whales were killed in the North Pacific between 1905 and 1925, including at least 11,167 from the Mexican and Hawaiian stocks, taken in the following


. Cetaceans of the Channel Islands National Marine Sanctuary / prepared for National Oceanic and Atmospheric Administration, Channel Islands National Marine Sanctuary and NOAA, National Marine Fisheries Service by Stephen Leatherwood, Brent S. Stewart, Pieter A. Folkens. Whales California Channel Modern whaling, from shore stations and pelagic fleets, took a heavy toll on all stocks of humpback whales. An estimated 23,000 plus humpback whales were killed in the North Pacific between 1905 and 1925, including at least 11,167 from the Mexican and Hawaiian stocks, taken in the following areas and approximate numbers: western Alaska 1,821; central Alaska 1,823; Southeast Alaska 329; British Columbia 2,835; Washington and Oregon 1,920; California 3,377; and Baja California 2,042. There is no reliable estimate of the size of stocks or populations at the end of the 1965 whaling season, when humpback whales received complete protection. However, it is clear that popula- tions everywhere were severely depressed. The severity of the over- whaling in the North Pacific is best seen in the Asian stock, in which whales apparently continue to be scarce on the wintering grounds even after 20 years of protection. It is equally clear, however, that humpbacks in many areas are, at present, recovering under full protection. For example, between 1977 and 1982 over 1,000 humpbacks were indi- vidually identified on the Hawaiian wintering grounds alone and most researchers actively studying this species in the North Pacific believe that there are well over 2,500 animals in the northeastern Pacific and that the population is growing at a healthy rate. In that broad area, humpbacks range from the Bering Sea south to Hawaii, to the tip of Baja California, into the Sea of Cortez at least as far as Espiritu Santu Island, and along the mainland coast of Mexico at least as far as Islas Tres Marias. Migration routes among these "grounds" are not yet clearly delineated, but photo


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