Elliott Bay is a large, active saltwater bay forming the central waterfront of Seattle, Washington. It is a tidal body of water within Puget Sound, characterized by significant commercial and ferry traffic, making it an intermediate to advanced paddling environment. The bay offers dramatic views of the downtown Seattle skyline, the Olympic Mountains, and the industrial activity of Harbor Island. Primary public launch points for kayaks and paddlecraft are located along the West Seattle shoreline, specifically Seacrest Park and Don Armeni Boat Ramp, both on Harbor Avenue SW. Seacrest Park provides a free boat ramp, though parking can be limited, especially after 5 PM. Another potential launch is Jack Block Park, also in West Seattle, which has specific parking regulations for vehicles with trailers.

Paddling here requires constant awareness of vessel traffic. Large container ships, bulk carriers, Washington State Ferries, Kitsap Transit fast ferries, tugboats, and the Seattle Fire Department's fireboat are all commonly present. Paddlers must yield to all commercial and ferry traffic and are advised to stay clear of defined shipping lanes. The waters can be unpredictable, with winds that can shift and strengthen, particularly in the evening. There is no sheltered surf zone; launches are from protected beaches or concrete ramps. The experience blends urban industry with wildlife; common sightings include harbor seals, California sea lions, bald eagles, ospreys, and herons. A unique paddling route explores the tight saltwater passages beneath the Seattle waterfront's piers and seawall, passing under glass block sidewalks near the aquarium, though paddlers should be cautious of aging infrastructure and ongoing waterfront construction.

The bay is suitable for paddling year-round, but conditions are highly weather-dependent. Calm, sunny days and clear evenings are prized for sunset paddles, where the view of the Olympics is highlighted. Water temperatures are consistently cold, requiring paddlers to be prepared for immersion with appropriate gear such as wetsuits. No specific water quality issues are noted. Guided tours and lessons are available from local outfitters like Alki Kayak Tours, operating from Seacrest Park, which offer instruction on sea kayaking fundamentals, rescue techniques, and guided tours of the bay and the mouth of the Duwamish River.