Fig. 3

Dive metrics calculated from time-series depths recorded at a native sampling period of 2.5 min and resampled to 5.0 and 7.5 min compared to concurrently collected dive summary records derived from conductivity sensor detected dives. a–f Show the distributions of the difference in dive duration between the two data collection methods for each sampling period. Blue broken lines indicate a theoretical error bound based on sampling period. g-l Show the distributions of difference in dive depth between the two data collection methods for each sampling period. Blue broken lines indicate the recorded error bounds for the dive summary record data maximum depth. m–o Show a confusion matrix of dive shapes calculated on board the tag (see Methods for details) and transmitted in the dive summary records, and estimated post hoc from the time-series