Figure 5 | Scientific Reports

Figure 5

From: Migrating eastern North Pacific gray whale call and blow rates estimated from acoustic recordings, infrared camera video, and visual sightings

Figure 5

Cumulative visual and infrared detections as a function of range. Cumulative visual sightings (yellow circles and left y-axis) for 5–8 January 2015 increase at a relatively constant rate until a range of approximately 3 km, while cumulative infrared blow detections (pink diamonds and right y-axis) increase at a constant rate until a range of approximately 2.1 km. Visual sightings do not have a probability of detection that decreases with range (confirmed with aerial sightings), but the probability of detection for blows decreases after 2.1 km.

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