Despite living in this highly urbanized estuary, these dolphins have shown remarkable resilience, say Flinders University researchers in a recent article titled "Long-term demographic trends of ...

But humans might not be the only animals that do this. Researchers have observed this behaviour in a bottlenose dolphin living in the cold waters of the Baltic Sea, near the Danish island of Funen.

"Smile and the whole world smiles with you," goes the expression – and it seems the same is true for bottlenose dolphins. The brainy marine mammals use friendly facial signals to signal non ...