Turnagain Arm is a saltwater inlet and branch of Cook Inlet located just south of Anchorage, Alaska, running parallel to the Seward Highway. It is characterized by dramatic mountain scenery and expansive tidal flats that are exposed during low tide. This waterway is known for extreme tidal ranges, with water levels capable of rising up to 40 feet, and for hosting one of the world's largest bore tides, a powerful wave that surges in during certain tidal conditions. Paddling here, including kayaking and stand-up paddleboarding, is considered an extremely advanced and potentially dangerous activity suitable only for experienced paddlers with a strong understanding of local conditions. The area lacks formal, developed boat launches. Rescue services must carry boats over 30-40 feet of large, jagged rocks and across mudflats to access the water, highlighting the challenging and remote nature of put-ins and take-outs. The mudflats themselves are famously hazardous, being like quicksand and difficult to escape. Wind conditions can be severe, with gusts around 30 mph creating challenging wave patterns even for experienced surfers riding the bore tide. The cold water temperature, even in summer, necessitates appropriate protective gear such as a drysuit. Wildlife sightings may include beluga whales, especially during salmon runs, as well as Dall sheep on the cliffs and various birds. The overall character of paddling in Turnagain Arm is one of significant risk and demands a high level of skill, preparation, and respect for powerful natural forces. Paddlers must be intensely mindful of the tides, as water levels change rapidly and the exposed flats can become deadly traps.