Harding Gateway is an alternative name for Resurrection Bay, a large, sweeping saltwater bay located at the head of which is the town of Seward, Alaska. This body of water serves as the primary access route from Seward into the Gulf of Alaska and is the gateway to Kenai Fjords National Park. The bay contains numerous smaller protected coves suitable for kayaking. Paddling here offers dramatic views of the Kenai Mountains and calving glaciers along the horizon. The water is home to a high level of biodiversity, with wildlife sightings including bald eagles, puffins, Dall's porpoises, sea otters, humpback whales, and orcas, particularly during spring, summer, and fall migrations. The aesthetic is defined by glassy waters, icebergs, and a rugged coastal landscape.

A common and notable paddling route involves launching from Miller's Landing on Beach Drive in Seward for a trip across Resurrection Bay to Caines Head State Recreation Area. This is a substantial undertaking, involving approximately 10 miles of paddling round trip combined with a 4-mile hike to the historic Fort McGilvray. The view from the fort overlooks the Gulf of Alaska, Harding Gateway, and the Barrier Islands. This full-day trip is considered moderate to challenging, requiring fitness for both paddling and hiking with elevation gain. Guided tours typically use stable, rudder-equipped tandem kayaks and provide necessary gear like life vests, spray skirts, and paddles. Paddlers must bring their own lunch, water, and appropriate layered clothing, including rain gear. A state park fee applies for kayak trips in Resurrection Bay. The area is exposed to the open Gulf of Alaska, meaning conditions can change rapidly with weather and sea state, and boat traffic from tour vessels is present. The best season for paddling aligns with the summer wildlife activity and more stable weather, though conditions are always variable.