. 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 Gray Whale Eschrichtus robustus Lilljeborg, 1861 The gray whale is probably the best known of the great whales of the northeastern Pacific and the species most frequently encountered in and near the CINMS, albeit seasonally. The vast majority of the population spends the winter in subtropica
. 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 Gray Whale Eschrichtus robustus Lilljeborg, 1861 The gray whale is probably the best known of the great whales of the northeastern Pacific and the species most frequently encountered in and near the CINMS, albeit seasonally. The vast majority of the population spends the winter in subtropical calving/breeding lagoons of mainland Mexico and the west coast of Baja California and summer in arctic and subarctic waters above Unimak Pass, principally the northern Bering and southern Chukchi seas. Migrations betweeen these widely separated "grounds" occur, for the most part, at predict- able times and along well defined routes. Although there are a few early migrants and stragglers, the vast majority of southbound migrating gray whales leave the Bering Sea between mid-November and mid-December in components some- what segregated by age-sex class. The southbound movement along the Pacific coast of North America spans the months November through January or early February. Some whales do not complete the south- bound migrations to southern lagoons, electing instead to remain off British Columbia, Washington, Oregon, or FIGURE 2. Nowhere are whales more singleminded-of-purpose than south- ward migrating gray whales. In December through February, as singles and in groups of up to 18 individuals, they annually parade through the SCB en route to the lagoons of Baja California and mainland Mexico. A major whale watching industry capitalizes on this highly predictable behavior. (Photo of Santa Barbara by P. C. Howorth.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an
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