Dolphins return to Lisbon's Tagus river

Dolphins return to Tagus river

Location: Lisbon, Portugal

Sightings have soared over the last two months

Courtesy: Lisbon City Council / Communication Department

some say it's due to the lack of cruise ships

and commuter ferries

But experts suggest an unexplained rise in fish

could be what's really brought the mammals back

Video Transcript

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