’In 2014, BBC aired a two-part documentary that featured intimate and close-up footage of dolphins using remote-controlled cameras disguised as sea creatures like turtles and fish. In one of the scenes, a group of adolescent dolphins captures a puffer fish and passes the ball-shaped little guy around. But as narrator David Tennant explains, what the dolphins really appear to be after is the toxin released by the puffer.
When attacked, puffer fish release a neurotoxin. In high doses, it can kill, but in small doses, it has a narcotic effect. It seems to be affecting the dolphins. They appear totally blissed out by the whole experience. And remarkably, all take turns in passing the puffer around.…’