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Tag: river-dolphins
How Scientists and Teachers Brought Rare Dolphins Back from the Brink of Extinction
The Guiana dolphin (Sotalia guianensis) is one of the most common cetaceans in Brazil but also one of the most vulnerable, with numbers dwindling by up to 93% in the last 40 years. One of the worst affected regions is Guanabara Bay, in Rio de Janeiro, where Guiana dolphins face daily industrial contamination, sewage and…