Trap feeding and tread‐water feeding are cetacean hunting strategies first recorded in the 2000s in two whale species at opposite sides of the globe. In both behaviors, whales sit motionless at the surface with their mouths open. Fish are attracted into the whale's mouth and are trapped when the jaw is closed. We identify striking parallels with the behavior of a sea creature named hafgufa in Old Norse sources. The hafgufa tra...

Summary Colwellia psychrerythraea is a marine psychrophilic bacterium known for its remarkable ability to maintain activity during long‐term exposure to extreme subzero temperatures and correspondingly high salinities in sea ice. These microorganisms must have adaptations to both high salinity and low temperature to survive, be metabolically active, or grow in the ice. Here, we report on an experimental design that allowed us...