Fin whales have a sleek, streamlined body with a V-shaped head. They have a tall, “falcate” dorsal fin, located about two-thirds of the way back on the body, that rises at a shallow angle from the animal’s back. The species has a distinctive coloration pattern: the back and sides of the body are black or dark brownish-gray, and the ventral surface is white. The unique, asymmetrical head color is dark on the left side of the lower jaw, and white on the right side. Many individuals have several light-gray, V-shaped “chevrons” behind their head, and the underside of the tail flukes is white with a gray border.
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