See how sooty terns and Alvin shrimp have learned to cope with conditions in the Tongan archipelago.

In the vast emptiness of the Pacific Ocean, tectonic movements construct or swallow islands. In the Tongan archipelago, two little-known animals have learned to cope with these ephemeral lands risen from the ocean depths: the sooty tern, a seabird that never dares wet its wings for fear of drowning, and the Alvin shrimp, a blind crustacean that manages to find its way around the abyss. When an underwater volcano becomes an island, the fates of these two extraordinary paradoxes are linked.