Abstract
Franciscana dolphins (Pontoporia blainvillei) are small odontocetes that are endemic in the southwestern Atlantic Waters and inhabit coastal waters (<50m) off Brazil (itaúnas) to Argentina (Golfo Nuevo). According with the IUCN Red List of Threatened Species, they are classified as ''Vulnerable'' and as ''Critically Endangered'' according to the List of the Brazilian Fauna Threatened of E…