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.

Puff, puff, pass. Puff, puff, pass. Look at these blissed-out young’uns!