New river dolphin species found in Brazil
Researchers have found what they describe as a new species of river dolphin in Brazil, only the fifth known of its kind in the world.
River dolphins are rare, most are listed as critically endangered, and it is thought that only 1000 of this particular species currently live in the the Araguaia basin.
One of the best known of the river dolphins, the baiji is thought to have died out around seven years ago.
The four other river dolphin species are the: baiji, boto, South Asian river dolphin and franciscana.
Find out more about our work conserving river dolphins. The Scientific abstract on this discovery is published in the journal Plos One.