In early 2020, as the SARS-CoV-2 pandemic took hold, a special kind of viral hazard appeared upon the surface of the sea. Offshore from Sydney, Yokohama, San Francisco, and elsewhere loitered cruise liners turned floating hot spots. As they awaited permission to dock and disembark their passengers, the boats became an inadvertent exhibition of cruising-industry foibles. Behind sluggish and patchy Covid action plans, we learned, lurked other forms of misbehaviour, from grotesquely unscrupulous labour practices to systematic tax avoidance. The high seas, it seemed, really were wild.