A new series set to air in 2014 reveals that dolphins might also know how to have fun. BBC discovered an underwater life while filming its new TV series "Dolphins: Spy in the Pod".
Using a fake sea turtle equipped with a camera, the crew was able to get access to dolphin pods and their behaviors.
The footage shows a group of dolphins nudging and chewing on a pufferfish, causing the fish to release its defensive toxins. The mammals then pass the fish around, take in the toxins and appear to go into a trance-like state.