Nature puts on few displays as arresting as Alaskan brown bears feeding on summer’s bounty. These bears—the largest coastal grizzlies in the world—gorge on clams, mussels, sedges and spawning salmon as the fish swim up the glacial-fed rivers that pour onto wild beaches. Our private chartered ship, the Ursus, designed for exploring the Alaskan marine wilderness, offers an exclusive opportunity for just eight guests to follow and photograph bears as they fish, forage and amble along the shoreline. Here in Katmai National Park, experience this rarest of encounters with Ursus arctos in all its untamed majesty.