The La Plata dolphin or Franciscana (Pontoporia blainvillei) is found in coastal Atlantic waters of southeastern South America. Taxonomically, it is a member of the river dolphin group and the only one that actually lives in the ocean and saltwater estuaries, rather than inhabiting exclusively freshwater systems.
Read more about La Plata Dolphin: Taxonomy, Description, Behavior and Feeding, Range and Habitat, Conservation