. 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 Body to 17 m long; males grow significantly larger than females. Body dark grayish-brown to brown; wrinkled in appearance. Back has rounded or triangular hump followed by knuckles along spine. Head boxcar-like, comprises up to 40% of body length. Single blowhole on left of head at front; blo
. 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 Body to 17 m long; males grow significantly larger than females. Body dark grayish-brown to brown; wrinkled in appearance. Back has rounded or triangular hump followed by knuckles along spine. Head boxcar-like, comprises up to 40% of body length. Single blowhole on left of head at front; blow projects forward obliquely and to left. Distribution extends from tropics into Bering Sea; adult males distributed farther north (to north of 4-o°N) than females or young (remain south of 40 N). Flukes straight on rear margin, marked by side V-notch, and raised on longer dives. Sperm Whale Physeter macrocepbaht (A) Without a Dorsal Fin There are three species of large whale without a dorsal fin in the eastern North Pacific and in western Arctic waters. All three are baleen whales. The first two, the right and bowhead whales, have enormous heads and smooth backs without even a trace of a dorsal fin. The third, the gray whale, has a head which is triangular in lateral or dorsal aspect, and a distinct dorsal ridge serrated by 6-12 crenulations that give the back a saw-toothed appearance as the animal humps up to begin a dive. All three whales have distinctive blows. In the bowhead and right whales, the projection of the blow upward from two widely separated blowholes assumes a very wide V-shape with two distinct columns, which may be seen when an animal is viewed from front or back. Though other baleen whale species may exhibit a V-shaped spout under ideal conditions, this feature is exaggerated and consistent in the bowhead and right whales and may be used as a primarly key to their identification. In the gray whale, the low bushy blow assumes in windless conditions what has b
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Keywords: ., bookcentury1900, bookcollectionamericana, bookdecad, bookyear1987
