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Pectoral fins

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
(Zool.) fins situated on the sides, behind the gills. See Illust. under Fin.

See also: Pectoral



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They also slap their long pectoral fins onto the water.
To our delight, just as we crossed into the Atlantic, humpback whales convened all around us, breaching, flapping their gigantic white pectoral fins.
2): Overall yellow except caudal fin abruptly white; upper third of body grading to brown and scales on lower two-thirds of side with narrow brown margins; dorsal fin brown on basal half, yellow on outer portion, except distal half of soft dorsal fin translucent; anal and pectoral fins yellow; pectoral fins translucent yellowish, the upper edge of its base brown, small blackish blotch covering anal opening.
 
 
 
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