Story : In the fourth episode of SuperQuark, the BBC series “a spy in the pack” continues. Our underwater journey among dolphins and cameras hidden inside fake underwater animals will resume: turtles, nautiluses, rays, tuna. It will be possible to observe large schools of dolphins feasting among sharks and we will discover the tricks of killer whales to capture seals. The “artificial spies” have made excellent sequences, but the squid camera will unfortunately end up miserably in the jaws of a hungry predator. The time is now ripe for an unprecedented medical revolution, the 3D printing of complex organs for human transplants. Barbara Bernardini met a young patient who received a printed bladder. Superquark followed a major intervention by Italian cooperation: the restoration of the Roman city of Volubilis, a little-known architectural complex on the edge of the Sahara desert, which once again tells us about the power of Ancient Rome.