Amazon river dolphin
There is ongoing debate about the classification of species and subspecies, with large international bodies being in disagreement. The IUCN recognizes three subspecies:"I. g. geoffrensis" (Amazon river dolphin), "I. g. boliviensis" (Bolivian river dolphin), and "I. g. humboldtiana" (Orinoco river dolphin); while the Committee on Taxonomy of the Society for Marine Mammalogy only recognizes the first two of these.