After release from rehab, bottlenose Billie started walking on water with her tail. Studying how the behavior spread could offer clues about how animals learn from each other.

A round-up of recent discoveries in behavior research

Observe a dolphin flipping its fluke through a bubble curtain in experiments used to determine the force of its muscles.

Dolphins prove that they rely on muscle power, rather than a trick of fluid dynamics, to race through water at high speeds.

A round-up of recent discoveries in behavior research

Since July, hundreds of the marine mammals have washed up on mid-Atlantic beaches.

Bottlenose dolphins can recognize and respond to their own “signature whistles,” strengthening the evidence that these whistles function like names.