That permanent grin on a dolphin's face has convinced swimmers and tourists for decades that these animals are happy to see them, but mistaking a fixed jaw shape for a friendly invitation has led to ...

A new study has investigated hundreds of videos and images taken by the public, tourism operators and scientists to better understand a rarely studied behavior among whales and dolphins—do they ...

Some Indo-Pacific bottlenose dolphins in Shark Bay, Western Australia use sea sponges as tools to protect their snouts while hunting hidden prey, a behavior known as “sponging.” Sponging occurs only ...