"Figure 8b.—Swimming, blowing, and diving characteristics of humpback, bowhead, right, and sperm whales," from: Whales, Dolphins, and Porpoises of the Western North Atlantic by Stephen Leatherwood, David Caldwell and Howard Winn (NOAA technical report NMFS CIRC-396), now available at Project Gutenberg.
Although a very detailed, scientific publication, it includes many photographic, line, and spotting silhouette illustrations, of interest to anyone learning how to identify these animals.
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