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Video transcription

My name is Maddalena Bearzi. I'm President of Ocean Conservation Society, a nonprofit dedicated to the study of marine mammals and the protection of the ocean environment. Today, we will talk about how many dolphins there are. We have about 69 species of dolphin, so they are grouped in nine different families. Their taxonomy is still a little bit confused, so sometimes a species get added or another species get eliminated. So, my name is Maddalena Bearzi. I'm president of Ocean Conservation Society. And today, the question was how many dolphins we have.