Fig. 6From: The intensity of horizontal and vertical search in a diving forager: the harbour sealDetection of benthic and pelagic diving. The histogram shows the empirical distribution of the distance between maximum dive depth and sea bottom, while the lines show the fitted mixture of n normal distributions (best model for n = 4). The fitted distribution with mean closer to 0 was assumed to be the distribution of benthic dives (mean – 3.15 m). The dashed line shows the threshold (2.2 m) used for distinguishing between benthic (<= 2.2 m) and pelagic dives (>2.2 m)Back to article page