Colophon

The animal on the cover of Juniper Networks Warrior is a seawolf, or Atlantic wolffish (Anarhichas lupus). The seawolf is known by many names: Atlantic catfish, ocean catfish, devil fish, wolf eel, or sea cat. This marine fish is the largest of the wolffish family Anarhichas. Despite its frightening appearance, the seawolf poses a threat only when it feels threatened, often when caught out of water. The National Oceanic and Atmospheric Administration’s National Marine Fisheries Service has named the seawolf a Species of Concern due to its rapidly depleting numbers—the result of bycatch and overfishing.

The wolffish can live close to a mile below sea level in temperatures below 40 degrees Fahrenheit. To survive in such low temperatures, the seawolf produces a natural antifreeze that keeps its blood moving fluidly. The seawolf plays an important role in its environment, keeping other populations—sea urchin, green crabs, and other bottom-dwelling species such as cod—in check.