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Figure 2


Fig. 2. Flow noise increases with body speed. The relationship between flow noise, measured by the hydrophone, and speed, calculated from the kinematics of the body, is shown for each whale (MnA, gray; MnB, black) during steep glides (–30 deg.≥pitch≥30 deg.). The relationship between flow noise and body speed was consistent among whales; each line represents a quadratic regression through the data from each whale (MnA, r2=0.76; MnB, r2=0.84).