. Cetaceans of the Channel Islands National Marine Sanctuary. Cetacea; Mammals. c. Ventral grooves absent, but 2-j deep longitudinal creases present on chin or throat; viewed dorsallv or laterally head nearly tri- angular, mouthline slightly arched: dorsal hn absent, but small hump present, followed by 6-12 ridges or crenulations; maximum body length m; i?8-i8o white to vellowish-white baleen plates per side; body mottled gray, * Gra\' Whale, Eschrkhlius robuslus (A") ^ a. Ventral grooves end before Go to 4 b. X'entral grooves extend to or beyond navel Go to 5 4. a. 50-70 vent
. Cetaceans of the Channel Islands National Marine Sanctuary. Cetacea; Mammals. c. Ventral grooves absent, but 2-j deep longitudinal creases present on chin or throat; viewed dorsallv or laterally head nearly tri- angular, mouthline slightly arched: dorsal hn absent, but small hump present, followed by 6-12 ridges or crenulations; maximum body length m; i?8-i8o white to vellowish-white baleen plates per side; body mottled gray, * Gra\' Whale, Eschrkhlius robuslus (A") ^ a. Ventral grooves end before Go to 4 b. X'entral grooves extend to or beyond navel Go to 5 4. a. 50-70 ventral grooves [2] longest often ending between flippers; baleen less than 21 cm long, mostly white or yellowish white ^some posterior plates may be darkj with 15-25 white bristles per centimeter; 2^1-285 plates per side [;] head coloration sym- metrical: maximum body length 10 m; conspicuous white band on each flipper; viewed laterally, head flat; viewed dorsally, head a slim, pointed triangle. * Minke Whale, Biilacnopicni acntaroitrata (Al b. ?2-6o ventral grooves, longest ending well short of navel; baleen less than 80 cm long, black (some antenormost plates may be white) and with 15-60 fine silky light bristles per centimeter; 219-402 plates per side; head coloration symmetrical: viewed laterally head slightly arched near tip; viewed dorsallv head slightly rounded on tip; maximum bod\' length i6m; flippers all dark. * Sei Whale, BaUeiwptcra hcrcahs fB) 5. a. Flippers one-fourth to one-third of body length, knobbed on leading edge (t«o prominent knobs 1; less than 2? broad, conspic- uous ventral grooves, longest extending at least to navel; head covered with numerous knobs: barniicles often attached to head, including lips; baleen less than 80 cm long, ash black to olive brown (^sometimes whitish), with 10-55 grayish-v\hite bristles per centimeter; 570-400 plates per side; maximum body length ]ust over 16 m. * Humpback Whale, Mcgaplem novaeangliac (A) b. Flippers less than one
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Keywords: ., bookcentury1900, bookcoll, booksubjectcetacea, booksubjectmammals
