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.