Fig. 2From: The advantages and challenges of non-invasive towed PILOT tags for free-ranging deep-diving megafaunaSurging acceleration, and spectrogram of the surging acceleration during; A a 5-min segment of reef manta swimming data, B detail of the section delimited by the black rectangle in A. Warmer colours in the spectrogram represent stronger signals, whereas cooler colours represent weaker signalsBack to article page