Figure 4. UMAP ordination of the WMD dataset with samples belonging to the Odontocete group coloured according to four families. All other samples (Mysticete and Pinniped) are marked in grey.
The labelled orca vocalizations (Fig. 5) showed separation between four of the five population labels, apart from NE Pacific orcas, the minority class of the group. EW Atlantic was the only label whose samples formed one large and distinct cluster. Samples from the two captive orcas (EN Atlantic – captive and EN Pacific – captive ), formed two distinct clusters, while the EW Atlanticsamples were scattered across a large area of the UMAP plot.